Most Helpful Guy
Yes in my early twenties there were a couple of girls that approached me about dating but I knew at the time I wouldn't be a great boyfriend. I unfortunately had to reject them and felt awful about it. Mostly because they were great girls and deserved to be with a good guy and at the time I wouldn't have been that.
There is one I still regret rejecting. We are still friends but she is seeing someone else now and is happy. And for that I am glad she is but I still wonder what could have been.
Not all guys think this way though but I am sure we all have at one point or another have felt regret rejecting someone.