I somewhat get where Nehemiah is coming from. Perhaps standing in your face with a bullhorn is why it's not going over well.
Nor is posting about personality disorder, which would likely not be a fitting post.
I'm going to take a guess that perhaps a man, or men, have done some hurtful things to you. And if that's the case your fears are understandable. This could make one paranoid that all men are bad and will hurt you. This is founded in experience and not a mind that is damaged, but rather a damaged heart.
But I am paranoid about women. Not to the extent you are towards men, but I have my own paranoias, fears, directed towards women in romantic situations. And this stems from my own past experiences of being hurt.
So paranoia has a loosely fitting application, but not really an ideal suggestion as using the term has so much of a stigma that, in this case, it adds more problems than it helps. Especially since it's not 100% fitting.
And, no, getting into a relationship is not ideal to overcome this. I'd skip the idea completely for now. Pick a guy to get to know. One guy. No rush. No romance. And see how much you can learn about that man that goes against what you already expect. Learning to slowly trust one man can open doors. Baby steps.
But keep one thing in mind. Your experiences may be with men, but it's not a gender problem in reality. The things women have done to me have been emotionally destructive to me as well. And I could have gone down a path of distrusting all women (and some women have told me they were surprised I haven't) but I try to see each woman as an individual, not all as the same.