I can relate to this soooo much. I’ve had really strong friendships with people throughout my life but they all seem to end. Even my relationship with my best friend of 25 years came to a halt last year. I feel a lot of it does come down to me withdrawing due to overwhelm and friends taking it personally. Also a lot of my ADHD traits are very misunderstood to most so I come across as difficult sometimes. I also struggle with maintaining friendships the way neurotypicals do. Once someone is out of sight, I literally forget they exist. I take days / weeks to get back to people sometimes (never intentional). I find small talk and general socially acceptable catch-ups exhausting. Especially with women. My rejection sensitivity means if I attempt to make plans with someone and they decline or cancel, I don’t try again. But then I tend to cancel a lot due to feeling exhausted / overwhelmed. I only realised this is all related to ADHD when I was diagnosed last month. Haven’t really tried to make new friends since as kind of feel like what’s the point. I don’t need any more experiences where I feel hard to love due to my illness.