How to stop being the other woman?

Dear Christine, FOR WHATEVER REASON, I seem to draw the attention of men who are either married or in serious relationships. The problem is that it doesn’t bother me that much.

I have been the other woman to a married man (very shortterm – as I ended things as soon as I found out he had children), an engaged man (this was longer, and I was very much in love with him – needless to say he broke my heart) right up until he got married, and currently a guy who is in a long distance relationship.