Uggh. That’s very annoying… I’ve been there too with the aggressive online stalking and ranting
My ex blatantly fancied a girl in his class at uni and she really liked him back, it was SOSOSO unbearably obvious and I asked him outright a million times, to which I was always met with “You’re being paranoid” … SO, obviously they ended up getting it on. TO BE FAIR, I did pull like 6 other guys whilst I was going out with him… HAHA, so errr, yeah, that was a silly relationship.