Madelaine Petsch Trades Riverdale for Cancun with Boyfriend Travis Mills

Just when you thought Madelaine Petsch and boyfriend Travis Mills couldn't possibly get any cuter, the couple went on a romantic Mexican vacation and the photos are beyond adorable.

The "Riverdale" actress rang in Mills' 29th birthday with a five-day stay at Live Aqua Beach Resort Cancun.

The vacation looks and sounds like the ultimate couples getaway. We're told the resort surprised Mills by decorating their presidential suite with balloons and birthday messages.

Petsch and Mills checked off all the important couples vacay activities: couple massages, jet skiing, dinners at the resort and, of course, looking madly in love beachside.