Michael Sam -- I'm Engaged!

Finally, some good news for Michael Sam -- HE'S ENGAGED!!!

It all went down in Europe where the 25-year-old football player has been vacationing with his college sweetheart Vito Cammisano ... the man Sam famously kissed when he was drafted into the NFL last year.

Unclear who asked who ... but one of Vito's friends (who was on the University of Missouri swim team with Vito) is already congratulating the couple about it on Instagram ... and Sam "liked" her post.

Sam has raved about his relationship with Vito -- and the two even traveled together to St. Louis and Dallas when Michael was working out with the NFL teams.

Mazel!