OP, other posters are right. Why even think about it?
I went out with a lad about 30 years ago when we were in the 6th form. His family were lovely and very well off. He was lovely but we were just incompatible really.
We bumped into each other around 8 years ago. He's incredibly successful now - successful businesses, was married (now divorced) to a beautiful woman, is a millionaire, very good looking himself. Very money focused (obviously!) but not arrogant. The sort of person everyone genuinely loves. He's popular, well known and well liked in the local area. Volunteers with animals in his free time. I've never met anyone with a bad word to say about him.
Just an all around lovely man. A couple of years ago, we kind of hooked up a bit over the summer. He lent me something quite valuable (financially and sentimentally) I still have it. He's said to take my time. So he's generous too.
He asked me out a couple of times the summer we hooked up but I turned him down - it's a nice memory and I'm pleased for him that his life has turned out so well - but I have no desire to revisit it. We'd still be incompatible and our life priorities are so different.
Later that year, I met my partner. We'll never have the lifestyle I could have had with that man. But that doesn't interest me. We just wouldn't be right for each other.
I just can't imagine having any disgruntled feelings or feelings of envy towards any of my exes. It just feels like such a waste of time and energy tbh.
Are you happy with your life?