Three times I tried to have sex with a girlfriend but I couldn't penetrate even once in her vagina. Everytime I try to insert my penis in her vagina, my penis bends (bends like rubber material) and doesn't even go inside it. However I can masturbate easily and get pleasure but when it comes to having real sex, I am not able to do it. I have a dick size of more than 6 inches and width is also wide, normally my Penis size is bigger than usual men's size.