Based on Chapter 12: Part 2
Alternate; Established Relationship
Castiel/Nathan

Bare Back

Castiel's hand snaked under the edge of Nathan's shirt, his hand going flat against his shoulder blade.

Nathan felt a shudder go through his body as Cas's fingers slowly trailed downward along his spine. He could feel the tingling and warmth that became a familiar effect of Cas's healing.

Cas nudged him forward slightly, pressing him against the back of the couch as reached Nathan's lower back. But instead of taking his hand back, his other one snaked under his shirt as well. It came around Nathan's front, claiming his lower abdomen, the tip of his calloused fingers under his waist-band. His other hand tugged down on his pants until they puddled at his ankles.

Nathan's penis was already half hard just from Castiel touching his bare skin, but when Cas grasped his cock and started to jerk it in a painstakingly leisure pace, he grew fully. He gasped out, a shudder of anticipation going through him as Cas slid his fingers between his cheeks, the tips of his finger skimming over his entrance. Cas kissed the back of his neck as he pushed Nathan forward over the back of the couch. He trailed the kisses down Nathan's spine, but even when he reached Nathan's lower back, he didn't stop there. He stuck his tongue out and trailed it between Nathan cheeks, dipping it in when he got to his entrance.

Nathan moaned, wanting to push back but Cas's hands on his hips held him in place. Before he stood back up, he bit Nathan's ass cheek, marking him. Nathan nearly came. Without preparation or warning, Castial pushed himself into Nathan's tight entrance.

Nathan let out a grunt of surprise, but not pain. The thing about having sex with Castiel was the fact that he had a magic penis. Any other person it would just be flattery or a lie, but Cas's cock was literally magical. Cas never needed to prep him, stretch him out because as Castiel slipped inside of him, Nathan was healed of any tearing and damage that was done. It was actually that that made sex with Cas more pleasurable because of the feeling that the healing caused.

"Cas!" Nathan gasped out when the Angel start to thrust into him.

For an Angel of the Lord, Castiel sure knew how to fuck.

The sound of Nathan gasping out his name turned Cas on even more and put more energy into his thrusts. Normally, he would have no knowledge of this type of thing, but with his time on Earth, he had learned a lot of things. Sex was among them, him actually having learned about it from Dean. So he supposed that he should thank Dean because if not for him, he would not have had a relationship with Nathan.

The by-product of Cas thrusting into him, was pushing Nathan into the couch. It was kinda uncomfortable but the pleasure masked it. But with each thrust, his erection would brush against the material of the couch - it was nearly as good as if he were jerking off.

Nathan was sure that he'd died and gone to heaven or something, because the thing about having sex with an Angel was the fact that they could really last a long time. Cas was able to control when he came. One time, they had sex for two hours straight, Cas not even pausing. Nathan came nearly a dozen times, Cas only once. Nathan had been so exhausted, sure that he would have died if he didn't have Cas's healing power.

But this didn't last that long, they were doing it in the living room of Bobby house for God's sake.

But that wasn't the case this time and when Cas came, it was almost like Nathan got blasted in the ass with a fire hose. He screamed out in orgasm, Cas's come burning inside of him. He shuddered and jerked as he came too, a layer of sweat covering his skin. Cas leaned on him for support, kissing the nape of his neck.

Cas was already hard again and he rocked back and forth inside of Nathan.

Nathan moaned, pushing back against Castiel. He could feel the hot come leak from his entrance and down the inside of his thighs. He was already full but he didn't much care.