No, but I've only had two proper relationships/ sexual partners (apart from experimentation with girlfriends which doesn't count..lol)
First boyfriend I was with for 4 years, then drifted apart as he had lifestyle ideas that majorly didn't suit me.
I regretted it a little as we stayed the best of friends but soon realised 'best friends' was what we were meant to be..
Then I met d.p , moved to a new city and life changed loads for the better, (we will get married at some point..lol) and had our beautiful son, and meanwhile my ex met his soon to be wife and I could not be happier for them both. They are just perfect for each other.
We are all the best of friends, spend loads of time together, and previous history never comes into it. They will soon be our babies godparents.