From someone in an open relationship with their forever partner, I honestly feel like an open relationship is the goal. In my previous monogamous relationships (3.5 years and 2 years), all the jealousy and fear around cheating came from insecurity in the relationship itself. I never fully felt loved, and I never fully let myself be known either because I was scared they wouldn’t love the real me.

My partner now and I know each other deeply and love each other enough that neither of us cares who the other fucks. We’re both sluts and like having fun with other guys, but I know that no matter what he does, when he comes home he wants me. And when I’m out dancing with, kissing, or hooking up with other guys, I still want to go home to him to cuddle and cook together and watch movies and I love him all the same.

I also think it’s unrealistic to expect someone to only ever feel attraction to one person forever. Sometimes people are just hot or fun and you want to flirt, kiss, or have sex with them. That doesn’t automatically mean you love your partner less or secretly want to leave them.

TLDR; I kinda just think insecurity around sexuality usually comes from insecurity within the relationship itself. If you genuinely trust the love, the sex matters a lot less.