Ted might not have known Joan for that long, but he does feel like he knows her fairly well already, and more importantly, he really cares about her. And he will continue to care about her tomorrow; this isn't some kind of one-night-stand that might make him anxious. It's the start of something. And while he wouldn't have minded waiting, he also certainly doesn't mind doing it now.

Her smiling down at him like that makes him feel warm inside in multiple ways. He rests his hands on her arms, closing his eyes to kiss her back. His breath hitches a bit as she puts the condom on him, and his hips arch a little up against her, eager to be touched more.