I don't feel like ill ever be wanted?

I am 19 and I only had one girlfriend my whole life. I feel like since I am a virgin that nobody is going to want me because I will not be able to pleasure them good enough because I don't know how too. I want to get a girlfriend fall and love and have kids but i doubt this will ever happen. This has gotten me into severe depression. I also still love my ex girlfriend with all my heart and we have been broken up for a year but she does not give a **** about me.