OMG OMG OMG. Gossip Girl co-stars Blake Lively and Penn Badgley - whose characters sort of broke up last night - are doing okay in real life.

To say the least.

Blake and Penn have sidestepped romance rumors so far, but there's no denying it now - check out this steamy kiss in the pool during a romantic getaway last weekend in Mexico's Mayan Riviera ...

Wow! Blake Lively and Penn Badgley really are a couple!

The lovebirds - who stayed at luxury resort Paraiso de la Bonita - make the best couple on Gossip Girl and in life, don't you think?

In any case, here are a bunch more cute photos of Penn Badgley and Blake Lively on their romantic holiday. Click to enlarge!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.