Please please please go in to counselling!
As a teenager I used to cut myself. My theory was I hurt so bad on the inside I needed something physical to show for it. I now have nasty scars all over my left arm, the deepest of them less than a cm from a major artery. You need to talk out how you feel with someone who can really help. Seriously. You will not find the help you seek online.
'People are never perfect but love can be. People waste time looking for the perfect lover rather than creating the perfect love' - Princess Leigh-Cheri from Still Life With Woodpecker.