<human>: Condense the text into a few key points

This is not fun to admit, but I am the definition of "the clingy girlfriend" that all guys run away from. Luckily, my boyfriend of nearly a year hasn't run away (yet). I have an anxiety disorder and am constantly in fear that he will cheat on me. (We are in a very long distance relationship, so that doesn't help.) I have heard many times that without trust, there cannot be a relationship, but I just cannot let these fears go. Also, the thought of him being attracted to ANYONE else besides me, whether it's a random girl or a celebrity absolutely kills me. I always want him to be talking to me and I'm constantly wondering if his ex's were more attractive or more fun. I don't want to feel like this and want to fix my mindset so that I can be better for him. Have any of you been through this and improved? I clearly need a lot of help.
<bot>: I am way too jealous and clingy and really need advice on fixing this so I can be better for my boyfriend.