Favorite couple EVER! Jennifer Lopez and Alex Rodriguez are official now -- 'cause A-Rod put a ring on it!

The baseball legend and the hottest queen of pop are engaged after Rodriguez popped the question during a romantic vacay in Miami. The pair had been posting pix of their sunny getaway and lo and behold, J Lo posts a ring pic and we're all DYING!

Lopez posted a pic of the beautiful cushion-cut diamond, holding hands with her soon-to-be-hubby and eight black heart emojis. Lopez's manager and pal Benny Medina also confirmed the news. The pair have been dating for two years and have melded their families, including two kids each.

Congrats! We can't wait to see the wedding!!!