Sharing Our Innermost Thoughts

anyone who has gone from an exclusive relationship to an open one ?
I’m trying to minimize the jealousy i feel…
I’m doing this for me cause i think it would help me, like accepting that my partner can see other people (sex only) would maybe erase the jealousy. like, in the process, that would also mean that i would learn to have confidence in myself, love myself, be less jealous, and feeling less anxiety, so much more peaceful. I’m tired of being so afraid that my partner would cheat on me, i’m so paranoid i make so much fake scenarios in my head and it’s giving me anxiety and it’s mentally and physically draining.
I know that isn’t a simple thing to do, that becoming an open relationship isn’t a solution to my problems, but i wanna know if maybe someone experienced this ??
sorry if it’s hard to understand