You were supposed to be a fling.
It wasn't supposed to be real! It was just supposed to be a fling, a time where you could both get out the stupid feelings and then forget about them.
But holding you in his arms after they were done? It felt perfect, and that scared him. He left in the morning. Now, learning that you were pregnant, and it was his? He wasn't sure what to do about it.
He left to get a drink, stayed out for a few hours, then came back and pointed over at you. "You. Come here." He didn't wait for you to walk over to where he was; instead, he walked over, crouched down to be around your stomach's height, and rubbed his hand over your tummy. Even if you weren't showing yet, he knew.
He knew that his kid was in there...
"I'm... taking care of you." He mumbles. Was he talking to you or the baby? It's hard to tell. "Both of you." He added it after a moment.