So I've been talking to this person who I know has BPD, and because I try to be really aware of mental health I might overthink these things. I noticed when we talk on messenger, a lot of the time the messages will show as sent but not delivered for a few hours. Not a big deal, just seemed weird because it only happened with him. I looked it up because I thought it was an error with messenger at first, and the only explanation I could find (besides their phone being off) is that if someone temporarily moves you to the "ignore" folder, messenger won't give them notifications and won't show your message as delivered.

I was a little confused but it was whatever. Then, I just happened to be on this sub and saw someone talk about how they turn off their notifications so that they aren't checking messages constantly, aren't constantly looking to see if the person left them on read, etc. Now idk if this can only happen with FPs, or just with anyone. This guy and I aren't anything like that at all, we were just fwb for a little bit 3 years ago. We occasionally talk online, hadn't much for a while and then started talking a little more recently and sexted a couple times. So I don't know if I'm overthinking or not. 


Can things like obsessively checking messages, rejection sensitivity from someone leaving you on read for a while, and stuff like that happen even with someone you're not in a relationship with/FP-ing if you have BPD? I've even wondered this before this thing, like, even if we're not close at all can his BPD (or others I know with BPD) affect him even with these interactions enough that I need to be mindful of not leaving him on read? I have a habit of taking a while to reply to people, sometimes opening a message and not responding til later and stuff like that. Or am I way overthinking this?