Summer Rae's got serious game -- 'cause the smokin' hot former WWE superstar was suckin' face in Cabo San Lucas with Dallas Stars stud Tyler Seguin!
No word if they're dating or just having fun -- but they're both in insane shape and look damn good in their bathing suits.
But get this ... Tyler was just named a 2018 NHL All-Star (his 5th All Star nod) -- so maybe they're celebrating?!
By the way, he's 25 and she's 34 -- GET IT SUMMER!!!