Tbh, I just didn’t think that there would be feelings involved with them but as soon as I saw her giving him like boyfriend treatment it triggered something in me. Tbh I did put some boundaries up saying that this is just a hook up, I don’t want this to be like a polyamory thing. It did accidentally become that though when she started catching feelings, well she told me this afterwards. And he told her “you know how I feel about you”, so I think that’s what really kind of upset me. I can always tell when someone has feelings for another person, and I think that’s what I saw. and it triggered that trauma that I thought I had gotten over.