Having just split from a 5 week relationship I think I will go for an open relationship. My exbf who was playing the field + had tons of problems.
Anyway I never was a fan for open relations because it was not me and didn't feel the need to date more than one person. About 6 yrs ago when I split with my then bf I met a nice young man. I was not ready for a relationship so we both agreed we could see who we wanted. It worked out very well because there was more honesty in general even if we were bothe honest people. It was less stress free etc. It didn't bother me if he had sex etc. with another because we both had an understanding.
Where as my 121 relationships had less trust etc. (all depends on the person of course) and teh fact that my there was cheating etc was more painful than anything because my my trust was betrayed plus got an std
Also when I was in an open relationship we had no need and didn't want to sleep with anybody else. So I say if you love someone set them free to love someone else and they won't go very far.