Definitions by aaccorsodiamonds

opbf 

Overly possessive best friend.

Typically someone who wants your attention so much, they become paranoid about losing their relationship with you and will do anything for you.

This is the 3rd time Katie's asked me to go watch a movie with her. She's such an opbf.

opbf by aaccorsodiamonds July 7, 2016