For a variety of reasons, I get quite bad paranoia sometimes that nobody actually likes me. I feel like at best they tolerate me, and at worst are using me. It's a really shitty feeling to feel. It's caused me to drift away from a lot of friendships because I think "they don't really like me", and then months or years later, I run into them and they ask me why I drifted away.
It took me quite a lot of time to come to terms with the fact that it's just my brain fucking with me. I still can't shake the feeling sometimes, but at least I can recognise it and work around it. It's a weird cognitive dissonance to have, to know that all your friends like you and enjoy your company, but at the same time feeling like a piece of shit that nobody wants to be around.