Loss of sexual interest

I have recently been overwhelmed with the idea of losing sexual interest with your partner. Now currently I don’t have an exclusive partner but I do have people I see on a regular basis and we have a sexual relationship. We do other shit and of course I’m attracted to them in other ways than sex but I don’t see myself wanting a marriage or kids with them. Anyways Ive had these kind of “hookups” or casual sex for the past 5 years I’ve been single and even before my relationship. For whatever reason 95% of these kind of just fade out. I LOSE INTEREST! I just wonder why? I still like them on a personal level but for whatever reason I just get tired of having sex with them. It starts to feel like a chore, and even worse the thought of it makes me cringe. I wish I knew why I suddenly lose interest. Or lose interest to the extent of just literally not even wanting a person to touch me, and find myself on the prowl for something new and exciting . Now when I was with my ex I loved him, like an obsessive kind of love. It Felt like I couldn’t live without him. I loved having sex, even when we were mad at each other I still wanted to have sex, which isn’t like me but I wanted that closeness with him. So that makes me think.. maybe if I love someone enough I won’t lose interest in them sexually and want to explore other options. Or maybe that strong love and desire with someone I love will also fade like it does in most marriages and long term commitments. Or maybe I’m a sex addict and always lookin for a new rush with someone new and exciting. Or maybe I’m scared of commitment and won’t love someone enough to actually want to put the effort in and not let It just die. I wish I knew. But I don’t. I would really love feedback on this one and opinions from people with the same or different perspective. Leave them below or inbox me on instagram.