Was my boyfriends at the time best friend. He was the third wheel in a clumsy late-teenage threesome. We bumped into each other a few years later when I was single and were married within 2 years x
We met at a mutual friends birthday party. Nothing happened until I broke up with my boyfriend about 4 years later.
Oddly enough that same group of friends were having a social gathering the weekend we got married and we went to see them the next day. My husband took great delight in offering my ex-boyfriend a slice of our wedding cake