Im going to give you advice in how to not end up like me.
Teenage men: If you think you are ugly/ unattractive and no girl is giving you attention, please learn to hold your value high and to love yourself. Learn that life will be full of disappointments and successes.
Find healthy ways to rid yourself of negativity and never stop trying. Trust me, I placed my value in the fact nobody wanted me and im still emotionally struggling from it. I GRADUATED IN 2013. This should tell you how real this is.
It doesnt define who you are. How you deal with your problems does. Stay optimistic but remember that life can be emotionally stressful, single or not. Developing the skills you need while your young is important more than ever.