Advice for a jealous lover?

[Camfer]

What do I do?
How am I supposed to see things so I see just him and not his sexual tendencies?
How do I move on and get back to loving him as a whole? Start feeling like I'm his "one-and-only"?
Or do I just drop it and move on with my life?

Pretending you don't see his sexual tendencies is lying to yourself. You do see them, clearly.
Pretending you are his "one-and-only" is lying to yourself again. You are not his one-and-only.

So be honest with yourself and decide if this relationship is what you really want. If it isn't, your idea to move on sounds like a good one.