Title: Something To Believe In
By: Julia
Pairing: Mac/Don
Rating: NC-17
Permission to archive: Sure just let me know where
Fandom(s): CSI: NY
Genre: Slash
Disclaimer: None of it's mine
A.N's: This is one of the first smut bits I've written. There are spoilers for The Fall in this one.
Summary: After The Fall Mac is there to hold Don together.

Mac did not want to admit how much that's days case had bothered him, not so much the impact on him but on Don Flack. The younger man had been down and even his banter with Aiden and Danny had been missing something. He had wanted to speak to him before he left work for the day but sensing that he wanted to do just that Flack had disappeared and no-one had seen him for a couple of hours. Mac had been stuck with paper work and it had been late when he left the office, rather than going to the effort of having to cook for himself when he got back home he headed down the road to a diner that was often used by lab personnel. On the way he passed one of the small bars that frequented that area and glancing in the window in passing he spotted Flack sitting at the bar staring into a drink. With a sigh Mac went into the pub so he could talk to the man he had been in lust with for months and try and stop him tearing himself apart.

Don had been sitting there for 3 hours with his first drink still in front of him, he had wanted to get drunk but it was not happening. Of the things he had expected to do in his career ruining his friend was not one of them, he could see why Moran had done what he did but still.

"Mind if I sit down?" A familiar voice asked, Don glanced up to see Mac looking at him, coat over one arm, tie loosened and top button undone on his shirt.

"Sure, help yourself." Flack said gesturing at the seat by him. The older man sat.

"Look Flack, I know you were close to Moran but it's not worth agonising over. He made his decisions, likely he made them before you were even partnered with him. And I am sure that he would not want you to be sitting in here drinking yourself into oblivion over him." Mac said.

"Fuck you Taylor!" Don said in a deadly quiet voice. "That just proves that you know shit all about me. Next time you try and offer advice just don't." He got up and left the bar. Mac stared dumb founded after him for a minute before hurrying out the bar after his detective.


Flack was walking briskly down the road to where Mac could see the detectives car parked.

"Flack wait!" Mac called, the younger man stilled before turning to face him again.

"Leave it till Monday Mac, I don't want to talk about it." Flack said unlocking his car.

"If I leave it you'll spend all weekend brooding." Mac pointed out

"I'm not talking about this here." Flack warned

"Fine we can go to yours then but I am not leaving one of mine with this hanging over their head all weekend." Mac said opening the passenger door and sitting in the car. Flack glared at him for a moment before climbing in the car as well and driving towards his apartment.



It was a decent length drive to where Flack lived and the silence between the two men was neither comfortable or uncomfortable eventually he pulled into an underground car park and turned the engine off.

"Come on then" Flack said. Mac followed him up 5 flights of stairs until they stopped in front of a blue door that looked as though it needed touching up. Fishing in his pockets Flack eventually brought out a key chain and opened the door.

"Make yourself at home, there's coffee in the kitchen so feel free to make some." Flack said as he hung his coat and scarf on a hook just inside the door and then disappeared into another room.



Mac looked around, a basketball was tucked under a small table which Flack had dumped his keys on other than that there was very little personal stuff in the room. A book was on the sofa and there were a few photos and posters but that was it. The detective came back out as Mac was hanging up his coat in tight blue jeans and a dark knit look jumper.

"So what'll it be... Beer, Whisky... I think I have some Vodka from the last time Aiden was here or there is just coffee." Flack offered walking into the kitchen unaware of the way that Mac was staring at his ass shown off by the jeans he had pulled on. "Mac?" Flack asked turning round and seeing the hungry look.

"Don I ..." Mac was at a loss for words.

"That's the reason you wanted to come back here then was it.. So you could try and fuck me.." Flack asked angrily

"Don I don't want to." Mac said

"Really." Flack sneered looking Mac up and down taking notice of the older mans obviously aroused state.

"Flack I did not want to come here for that, I came here to help a friend." Mac said his temper being held onto by a very strong will.

"Now why don't I believe you?" Flack asked. For a second Mac saw red and lashed out and punched Flack on the chin knocking the younger man to the floor.

"Shit! Don I'm sorry." Mac started before the younger man pushed himself up and launched himself at Mac. The pair ended up in a heap on the floor and for a minute it was difficult to tell what limbs belonged to which person. When they stilled Mac was sitting on Flack's hips and both were breathing heavily.

Looking down at the man beneath him Mac locked eyes with Don and was surprised at the lust he saw.

"Don?"

"Mac please, I just need to feel something." Don said trying to arch up under.

"You asked for it." Mac said and let go of his grip on his control.



Don found his mouth seized in an insistant kiss, he no sooner gasped than Mac's tongue was in his mouth exploring it and mapping every inch. Mac's hands felt as though they were everywhere and it was all Don could do to respond to the heated kisses without trying to explore Mac as well.

"Sit up" Mac demanded. Don sat only to have his jumper pulled over his head and tossed to one side.

"Mac wait." Don managed to gasp.

"What?"

"I want you inside me before we're finished and my supplies are in the bedroom." Don said. Mac smirked slightly and got to his feet. He offered Don a hand up and both headed towards Don's bedroom both stripping as they went. By the time they reached the bed Don was naked, Mac sat on the edge of the bed to strip off his shoes and trousers and then joined Don both as naked as each other. Knowing that the emotions fuelling both men meant that this time was going to be fast and hard. Grabbing the tube of lube and a condom that Don had fished out while Mac was stripping he rolled it onto his erection before looking at his bed mate. Don was lying on his back with his legs parted and a cushion under his hips.

"Have you done this before?" Mac asked as he slicked up one hand.

"Yeah." Don breathed as the first finger entered him. Mac was unprepared for the surge of jealousy that remark provoked. He stretched the younger man quickly but thoroughly and then kneeling over the younger man he slowly began to enter the younger man. Don's eyes were closed tightly and his hands were fisted in the sheets but one look at the younger mans cock which was still as hard as it had been before Mac entered him expelled any worries that Mac had.

"Look at me Don." Mac said softly.



Don could not believe that this was Mac inside him, he had imagined this before in an abstract what would it be like to fuck him way but never imagined that it would actually happen. Hearing the soft order to open his eyes he opened them to see Mac's eyes looking back, their eyes locked and that was it both were lost. Mac was managing to hit his prostate on every thrust and for the first time Don found himself coming just from being fucked. Feeling blessed out he was vaguely aware of Mac tensing and coming as well, when the older man collapsed beside him breathing heavily. The two men lay there while there breathing returned to normal, Mac was the first to move, he padded across the room to the bathroom and Don heard the toilet flush and then water running. Mac came back with a damp towel.

"Are you going to leave now?" Don asked taking to towel to wipe his stomach down.

"Do you want me to?" Mac asked

"I want you to stay." Don said not wanting to be alone now.

"Good." Mac said and got into the bed.


An hour later the light through the open curtains showed two men curled up close together fast asleep and if the older one was making sure that the younger man did not go anywhere then the smiles on the faces of both men showed a comfort in the situation that both had been missing for a long time.


The End