Just a rant

Im really starting to hate myself, because up until recently I really like this girl and that was for like 8 months, but I found out that she had a bf like on the 6th month but it was still hard to get over. But now all I want is a gf, like literally every woman in my age range I try thinking about if I could possibly date her, and I made a few friends online recently and there is a girl in that group and I really hate how the first thing I thought when I first spoke to her is "i wonder if I could date her", but even after all that I would never be a good bf, I'm lazy, not good looking, and have a pretty bad personality. When someone is nice to me, I can't help but start to think of them as someone who I could date. Also I have problems sleeping most of the time, like I can't sleep at all. When I eat, I eat like 2 bites of my food and then I feel like I'm abt to throw up, and other times I'm so hungry and no matter how much I eat it doesn't change anything.