The biggest challenge facing gay males is this social programming about sexual monogamy, which is an extension of religious programming. When you step back and look at the Christian marriage structure, it's legitimacy is not based on Love (in spite of reading part of 1 Corinthians 13) at the ceremony. No, the Christian based marriage structure is based on jealousy of the other. That is, the entire validity of the marriage is based upon the agreement that you will never have sex with anyone else. Ever. And if you do, EVERYTHING about the relationship was false. Scientific research has found males to be naturally sexually promiscuous and that sexual monogamy is the exception, not the rule within the animal kingdom. When you can let go of the Christian-social based brainwashing about sexual monogamy being equivalent to a successful, meaningful relationship, relationships can flourish in a non-toxic environment.
First, sexual promiscuity removes the concept of "cheating"--the Jealousy of the Other aspect-- from the conversation. Cheating is part of that Christian relationship concept that has proven itself a massive failure time and again, destroying many, otherwise healthy relationships and supplying culture with half of the country music catalog, most of Taylor Swift's musical output and one VERY angry song by Alanis Morrissette. According to this logic free religion, sex is a dirty sinful act, unless it is performed under specific circumstances (i.e. in a state of holy matrimony joined by a member of church clergy), and then sex somehow magically transforms from dirty and sinful into the Ultimate Expression of True Love.
Second, without the jealousy and constant worry of "is he cheating on me with 'X'?" you can actually focus on the meaningful part of the relationship with the other person--the emotional connection, the actual Love. My own partner and I play around, sometimes together, but more often than not it's apart, and it's not an issue. It's just sex. We trade stories about our experiences and partners and enjoy hearing the the other had a good experience. While he is not nearly as sexually prolific as I am, he encourages my sexual activities and has even been the camera guy on some of my porn shoots. We both know that the other comes first in our lives and at the end of the day we still curl up together and Love each other. Too many guys confuse the dopamine induced after glow of great sexual chemistry with the basis for a relationship. And it's not.
Sex is the ultimate male Pleasure Sport, a natural animal drive that is in our DNA. Who you have sex with is not indicative of who you Love and care about. That connection is fallacious one created by the Christian church, having no basis in reality and doing massive damage to otherwise healthy relationships by establishing a marriage based on Jealousy it markets as Love. The sooner males walk away from this toxic idea, the stronger their relationships will be....providing they can let go of the socially programmed lens of Jealousy-based monogamy, through which they have been trained to see relationships. Good luck!!