Has this ever happened to any of you..?

Olivia β€’ 01.28.19πŸ‘ΆπŸ» 09.24.19πŸ’ 06.06.20πŸ’10.03.20πŸ’’
Today, my bf and I were having sex (with a condom) and right in the middle of it, the condom got caught inside of me and came off of him. He didn't cum though. I was just in shock because it hasn't ever happened before. Has this ever happened to any of you and if so what was the outcome for you and why does this happen??