Draco remembers discussing at one point or another doing this thing without all the hell drugs and sneaky potions... and he would be lying to say he wasn't curious. The idea possibly may have crossed his mind more than once.

And he might've had more to say, but Billy is kissing him again and that somehow seems more important.

So he lets his fingers travel down to catch in the front of Billy's shirt and try to pull him even closer, potentially, right into his lap. Draco doesn't bother to break the kiss, but he does deepen it, his only reply a low hum caught at the back of his throat.