I did. In France when I was 25. I was there for a year and had a boyfriend back home in uk. I worked with French guy and we were such good friends. Like, amazing connection. One night after a lot of drinks at a conference we kissed, but put a stop to it and both went back to working relationship/friendship.
The way he spoke to me I had several 'I could spend my life with this man' moments, but went home to boyfriend after year was up, only to realise our connection was nothing like that with French man.
After 6 months was going to go to France again but he had to go to Canada as his dm was not well at all. And so things continued for a while but there was always something so I guess it wasn't meant to be.
I think about him often, and am friends with him on Facebook. But I rarely go on there and I don't contact him because I know it would open up old feelings and I don't know how strong my resolve is, and I am now married with 2 children.
But long story short, I still feel if we had got together it would have been amazing. But I'm aware that's probably fantasy, and so I'm happy keeping it that way, if a little sad looking back.