**Rated M for sexual content!

Chapter 4. Chemicals React

"Well, this is it," Becker said, leading Abby into his flat.

Abby looked around,

"Wow, you're place is really neat for a single guy's flat," she laughed.

"I guess it's the military thing, old habits die hard," he mused.

Abby slid her coat off and lay it on the back of the couch.

"I'm just going to put your bag in the bedroom and I'll be back, make yourself at home," he told her before disappearing into the other room.

When he came back, Abby was staring at a picture on the mantle, shaking mildly. The picture she was staring at had been taken just shortly after he'd started working at the ARC, it was of him, Abby, Connor, Nick, Sarah, Lester and Jenny. Idiot, he chided himself for leaving the picture out, before walking over and putting a hand on her shoulder. She turned at his touch, and looked up at him.

"God, you must think I'm the whiniest person alive since I've been back," she joked lightly, "It just caught me off guard seeing it, I never thought I'd see the day when it was down to three of us."

He turned her to face him, and cupped her cheek in one hand, "I don't think you're whiny Abby, you've lost everyone close to you, it's only natural you'd be upset."

"I haven't lost everyone, I've got you…and Lester," she said the last name with the faintest hint of sarcasm.

"I've got something that might cheer you up some," he said with a small smile before disappearing.

When he came back, he cradled Rex in his arms, he'd gone to Abby's the day after their disappearance and got him and the lizards, not wanting anything to happen to them. Lester had been taking care of Sid and Nancy and become quite fond of them, not that he'd ever admit it.

"Rexy!" she cried, hurrying over to him and scooping the dinosaur into her arms, "Did you miss me?"

The dinosaur chirped happily and gently nuzzled her hand, before flying over to the table underneath the window to sun himself.

"Your snakes and lizards are here as well, in the small room off the kitchen," he told her.

She looked at him, eyes full of surprise, "You didn't have to do that, but thank you Becker," she said wrapping her arms around his neck to hug him.

He held her close, letting his fingers run through her now, shoulder length, silky, blonde hair. She shivered slightly, then her eyes came up to meet his. They stared at each other for several seconds, eyes locked in an incredibly sensual gaze, before he leaned down and pressed his lips against hers. She kissed him back, their lips meeting each others hungrily.

Her hands found the hem of his t-shirt and pulled it off, she slid her hands down his bare chest before wrapping them around his shoulders. He let his lips travel from hers down her neck, nibbling softly. He could feel her nails dig into the skin of his shoulders as he began letting his tongue run in small circles on the nape of her neck.

He brought his mouth back to hers, sliding his tongue in her mouth and let his hands wonder down her body and slid one under the edge of her shirt, bringing it up to cup her breast through her bra. He let his finger brush across the skin at the edge of her bra and when she didn't make any signs of objection, he pulled off the shirt and unclasped her bra, bringing his hand back to breast and letting his thumb run circles on the nipple. She moaned softly, and he brought his mouth down to one breast, while still teasing the other with his hand.

It had been too long since he'd felt like this, since he'd started working for the ARC, there hadn't been time for relationships or anything, and his desires had his body in overdrive. He brought his mouth back to hers and began pulling her into the bedroom, pushing her down on the bed.

His hands found the snap of her jeans and quickly undid them and slid them off, before he began letting his lips stray from hers and begin traveling down her body again. He slid his hand between her legs and began fingering her through the thin fabric of her panties. She moaned deeply, her back arching and pushing his teasing fingers deeper, the fabric slipping aside, he began probing her deeper, his rubbing and pressing causing her to orgasm against his hands.

She quickly removed his jeans and boxers and he slid off her panties, before pressing himself deep inside her. She wrapped her knees around his waist and flipped him to where she was on top, she brought her mouth back to his, kissing him deeply as she began rocking back and forth. This time it was him who moaned deeply and was quickly forced into an orgasm.

He didn't know how long it was before they lay together, exhausted, exchanging lazy kisses, Abby eventually falling asleep against his chest. He lay there awake for a long time, running his hand up and down her spine. He realized Jess had been right, he did love Abby, and he'd wanted what happened between them, but he worried she'd regret it. She'd been upset, and he was pretty sure that was the only reason it had happened.

"But the planets all aligned, when you looked into my eyes, and just like that the chemicals react." Aly and AJ