Overwhelming disgust towards others

Hi everyone. Unfortunately, I'm no stranger to intense feelings of disgust, but the type I typically feel is self-related (usually in the midst of a depressive state.) I've been told that this is a rather common emotion in BPD and I'm learning how to cope with it in DBT.

That being said ... what I'm really confused/nervous about and the reason for my post is that lately I've been having intense feelings of disgust for other people, rather than myself. This isn't entirely rare for me, since I've felt that way towards significant others as a secondary response from feeling abandoned, betrayed, unloved, etc. but this doesn't feel the same. Not saying that being disgusted by my partner is valid, but that at least makes a little bit of sense given the emotional vulnerability involved in those types of relationships.

Recently I've noticed myself get downright disgusted by acquaintances, coworkers, and sometimes even friends. This one person in particular, who I've only met once but have been texting back and forth with for about three weeks is the main target for my disgust and I have absolutely no idea why. She made it rather obvious from the beginning that she's romantically interested in me and I made it painfully obvious from the beginning that the feelings weren't/wouldn't ever be reciprocated (que friendzone.)

To make a long-ish story short-ish, she hasn't given up on trying to win my affections and reaches out to me every single day (I've never contacted her first and only reply when she contacts me because I haven't seen any legitimate reason not to.) It's come to a point where literally anything she says or does sends me into a complete state of contempt to the extent that I feel raw hatred for her (this person I hardly even know!) Needless to say, these feelings have given me a "legitimate reason" not to reply to her so I was happy when she "accidentally" deleted my number. But now she's contacting me on a social media app (snapchat, for those of you who're familiar) through messaging and with things like pictures and videos of herself doing random things like singing in the car, hanging out with friends, etc. These things send me into an even more severe state of disgust which has actually hindered my productivity at school and work because I'm so engrossed with the feeling.

Has anyone ever experienced this kind of disgust for another person that they barely know? Or does anyone have any ideas as to why this emotional response might be getting triggered more recently, but specifically in this one situation? I've been very stressed out lately juggling school, work, and therapy two times a week so it's a possibility that the stress is contributing to it, but I just don't know. I'm getting worried that I'm going to teeter over into full-blown psychopathy and hate the whole human race. I'd really appreciate others' thoughts about/experiences with this!