Severely Depressed and Alone.?

I'm 19 years old and I just graduated from high school. I don't get any joy out of life anymore and I'm not even excited about being done with high school. I have only a few friends, roughly ten. I hide the fact that I'm depressed in front of my friends. I moved around schools a lot in high school which probably didn't help. I am generally outgoing and nice, and some people tell me I'm funny. I have never had a girlfriend in my life and am still a virgin. Believe me, I have tried many times to get a girlfriend and always get rejected, which ruins my pshyche even more. I'm in fairly good shape and people have told me over the years that I'm good looking. I have been going to a phychologist who has been practicing for over thirty years. And after two years he hasn't done me any good. He doesn't seem to relate to me because he's nearly 70 years old. I tried a few anti-depressents and the side effects were too much to handle. My parents just think that I'm just going through normal teenage stuff and don't understand the seriousness of it. Deep down inside I feel completely alone and empty and often think about offing myself because I feel like my life isn't really worth living. I have always felt completely disconnected from the whole world and I don't really relate to anyone at all. None of my life seems enjoyable even when I'm with my friends and lately I have been losing interest in all the things that I used to enjoy. I often cry when I'm alone for no apparent reason. The whole world just seems bland and plane. Seasons don't even effect me, I feel the exact same way in the winter and in the summer. My fear is that I'll wake up in twenty years and my whole life will have just past me by right before my eyes. I have told all of this to my psychologist and he still hasn't helped me in the slightest way. To top all of this off I am a convicted felon and am on supervised probation for the next five years for possessing a large amount of marijuana with the intent to deliver. Sorry for the length of this but I'm in the time of my life where I need some advice. Any posative responses would be appreciated.