If you want to find a girl, you need to go out and find one. You won't find her under your mattress, and most likely you won't find her here at WP.
You need to consider what exactly it is you are looking for, and make a plan as to how you are going to get it!
I have now read 20 pages, and I am sure it will be much more by the end of today, with you saying that you can't get out of bed and no one will ever like you, you will never find a partner or friends, you are boring, your not interesting, you are a whole host of other negative things.
I have read along with those 20 pages, a crew of people trying to cheer you up, and genuinely feeling that you are not any of those negative things. I have seen a huge amount of effort going into trying to convince you that you are interesting, you are a valuable person, and even many have offered friendship! People here are worried about you! That is because they LIKE you and don't want to see you suffering so.
I know you are in a lot of pain, and I can understand it, I have been there myself, and right now, I am 30 years old with some good things, but also a lifetime worth of pain and underachiving. I have been focused on all the wrong things for so long, that the negative s**t is my life! Comming to WP has taught me a lot and I am now starting to make positive decisions, and things are turning around. What once seemed insurmountable is actually happening and not even that difficult!
My husband brought home a copy of a movie yesterday he got from one of his employees. it is called "the secret" You can see a trailor here, http://www.thesecret.tv/home.html and even for 5.00 US watch it. Honestly it is very powerful stuff! Your life is what you make it. If you focus on what you don't have, you will never get what you want. if you focus on what you want, then you will get what you want. If you focus on what you don't like, then you will never get what you do want! It really is that simple, and I know it seems like such a monumental shift in thinking, that it in itself seems impossible, but with babysteps and a plan and support from your family, I know you can do it, anyone can.
Anyway, watch the movie, change your life. Make a decision, either email this person and get it over with one way or the other, or register on a dating site or some other avenue to meet people your age that you may be attracted to. They are not going to come knock on your door, they are not hiding under your bed, if you really want a relationship, go look for one.
Don't tell them that you are unlikable, or that you are boring, or that you are bad or defective or depressed. Share with them what you are, what you like, what your hopes are, your dreams are. If they can't appreciate you for you, then move on. But I think you overcomplicate people, the vast majority of people are not "exciting" in the end anyway. Most people just want a quiet life with a good job, a few friends and family to share their days with.