I am just curious if anyone has had a one night stand lead to a long or even short term relationship?

I hooked up with this guy recently that I grew up together with. We were never close or anything but we did go to the same schools. I never had a crush on him or even considered dating him. Anyways, after our one night stand I can't stop thinking about him. Thankfully he feels the same way!

It is pretty amazing ...

I wonder how many other people this has happen too and what are the chances of this encounter turning into a long-term healthy relationship?

At least two people have to agree on the relationship (see below)

A single sexual encounter between two individuals, where at least one of the parties has no immediate intention or expectation of establishing a longer-term sexual or romantic relationship. As the phrase implies, the relationship lasts for only one night.