<human>: I've hooked up with a friend of mine (we've known each other a few years) about six times now over the past few months. We're not FWB though - it just sort of ends up happening.

The thing is, I'm confused about my feelings for him at the moment. 

There was a period where I think I legitimately had a crush on him and was upfront about this because I didn't want things to get messy, so I know that on his part at least, he doesn't have actual feelings for me.  My crush on him seemed to fade after that - like, I can't picture myself in a relationship with him. I've realised we would be a *total disaster* if we ever got together. Like, I obviously like hanging out with him, but  I'm really unsure about the idea of hanging out with him as much as I would with a boyfriend.

The problem is, I still get jealous about him, like when he flirts with other people or if I found out he got with someone else. I'm not sure how much of this is a product of the fact that I'm really insecure and have anxiety, so I keep comparing myself to these girls. I also find myself thinking about the sex a lot but I think about sex a lot normally anyway and he's the only guy I've had sex with recently, so I wonder if that could be why.

So: does jealousy always mean you have feelings for someone, even if you don't want a relationship with them?

Could you distill the essence of the text into 1-3 sentences?
<bot>: I've slept with my friend a couple of times now, don't want a relationship with him, but get jealous. Does this mean I do have feelings for him? Or not?