Man, I have to be honest, I read through all of these replies and I really fail to see how OP is objectifying women or "disrespecting" his love interest. OP claims he stopped talking to this particular woman as soon as he got the hint, which is a sign someone actually respects women. And just speaking as a woman myself who has had many bad experiences being objectified and dehumanized in college, OP does seem to take into account her thoughts and feelings, which shows that he sees her as a human being. I really don't think it's fair to gang up on someone and scrutinize them in this manner just because someone has abnormal feelings of unrequited love, and I know there's a lot of valid hysteria today over misogynistic and entitled young men, whom have unhealthy views about women, but to try to pigeonhole OP as such when he only gave a personal account of his situation, and don't know what he's actually like in real life really isn't fair and could do harm to such a person (he mentioned attempting suicide in his last post!) OP mentions struggling to get over a girl he had good vibes about, because he is having trouble finding someone else who excites him, and it's natural to feel this way, even if it's unhealthy. It has nothing to do with his character and it just isn't productive to compare him to obsessed groupies.
Now OP! I do think everyone is right about you idealizing her. Even if you don't think she's perfect, you feel like she might be perfect for YOU, and you don't know that for sure (and I think you recognize this, but it's hard for you considering you've struggled to find women who excite you, as you mention) And in this type of situation I think it it totally natural to idealize, considering you never really met her in person, never will have the chance, and given the way you feel about this it's making those thoughts stew. It sounds like you're trying to keep these thoughts in check, which is great! As for finding women you like...continue putting yourself out there. Someone mentioned lowering your standards, which helps some people, but it really depends on the person. Just based on what you posted I assume you tried doing this before and it wasn't your cup of tea. If that's the case, by all means, keep going for what excites you! People say to be yourself, but if you're having trouble finding someone you like, you may want to revise your strengths and find ways to stand out over others. Luck does play a factor in finding someone as well, so put yourself in as many situations as possible!
Best of luck OP, and I hope you're getting help with your mental health and suicidal thoughts! You matter!