So I have been faithful too every girlfriend I've had up to my most recent ex, why? Because I've thought that was the "Right" thing to do. But within all those relationships I have always felt jealousy and paranoia about my girl cheating on me, probably because I was insecure about my self. But now in my older age I've been questioning that whole "1 person 1 love" thing.
Attraction, its the start of any mutual relationship, but what happens when you get into that relationship. It does not simply go away the second you decide to be faithful, you just hide the fact that you are attracted to others or if it does come to the surface you get into a ton of shit because of your partners insecurity, and you spend a night making up for the fact that you call someone "hot" or hell, even look at another girl the wrong way.
So why not embrace this attraction? I feel like people can love one another AND still be attracted to others. Most guys would have no problem dating a bi-sexual girl and if that girl makes out with another chick everyone is like, "OH SHIT THAT'S HOT". So wouldn't it be wrong to assume its right ONLY if she hooks up with a girl, I am sure shes still attracted to guys also but she only acts on the attractions towards the girls because she knows her partner is good with it.
I am not bi-sexual, BUT I am attracted to the pleasure that a girl is receiving, its a huge turn-on to see a woman have a mind blowing orgasmic experience. Whether that be a toy, my cock, my tongue, someone elses tongue, or someone elses cock. Embrace the true and uninhibited feelings that pleasure can give. This does not mean you should fuck every single person who wants to fuck you, but at least, if the feelings are mutual, you have a guilt free, enjoyable experience to share with your lover.
In conclusion I have decided as of now I will only be in open relationships with other like-minded women. If I fall in love so be it, if not I will have a fucking blast either way. This style of living completely rids a relationship of jealousy and insecurities, which have destroyed my past relationships, and most likely some of your relationships.
Give true pleasure a shot. I am sure you will not regret it. I Look forward to my first experience of openness.