Always go for the girl that is chasing you. Life advice from a lifetime of love bro. She will be more likely to stick around and at least work harder to keep you happy. Unless you're into tits ... then have at it hoss. But people, in general, pull away from others that are too into them. Conversely, they chase the people just out of their reach/league.
Also, that was the only real kiss since it wasn't an accident, included some intentional tongue, and came from a girl that has confessed her love. She checks all the boxes for me ... too bad she also checks all of the boxes that, using manga logic, will guarantee her 'loss'.