I can see where Seaver is coming from, even though he said not to listen to me, I won't hold that against him.
If it was only a kiss, why would she freak out? I mean, it's only a kiss, it's not a big deal (unless you've done nothing more than kiss with your girlfriend -- not that there anything at all wrong with that - )
If it wasn't only a kiss, what do you gain by telling?