What Is Wrong With Me?

My whole life women have never liked me or found me attractive; I sign up for online dating sites and I send them emails. They either do not respond or all they want to do is talk online, I ask if we can meet and they say no. When I was younger I would ask them out and the answer almost was always no and on the rare occasion they did go out with me it was always your nice but I don’t like you in that way. I don’t understand why, I shower regularly and I’m well groomed. I know I’m not the most attractive guy but I’m far from being ugly, I have even gotten compliments on my blue eyes. One time I asked a girl out and she said yes, and then when I went to pick her up that is when she told me she was already seeing someone, this is the kind of thing that has always happened to me my whole life and still is. Right now I am afraid that I will never find the right woman and I will spend my life alone. What it so wrong with me that women can’t stand me, what do I have to do to find someone?