For me its true

Maybe so. When my wife and I were dating in college, she dated several other guys, but I never had a date with any other girl. On the other hand, she was tempted to choose any of the others, but she always stuck with me and dumped them. I don't know how to process that data.

I could see there being truth to this. If there is equal reciprocation I think that would work well too but if the dynamic turn to the girl being more in love with the guy than he is with her they may be more vulnerable to problems. Not sure at all but how the dynamics in a same sex relationship work.

If guy is in love...does everything for her but she doesn't given his love importance and when guy starts feeling crack in the relationship he seperates .... whose fault is in this?