Natasha feels as though she cannot possibly stop kissing Daniel. She feels his kiss everywhere in her body as he guides her down onto the couch. She wraps her fingers in his hair, thinking that she doesn't believe in magic, but this certainly feels like magic. Both Natasha and Daniel think that the kiss is amazing, and Daniel reminds himself that they cannot have sex in the norebang. He doesn't want to think that he'd ask a girl he just met to have sex on the first date, but he feels like that guy right now.
Notice that the kiss has the power to entirely alter Natasha's deeply held worldviews regarding magic, showing again how profound human connection can be. Daniel's thoughts, on the other hand, show that he believes there are ways to take connection too far, suggesting that he believes connection should have limits—at least at first.