this sounds like a SERIOUS self esteem problem. If your need to feel that you look perfect is so dominate in your life that when your skin broke out, you attemted suiside this is very serious. Have you talked to a therepist about this? If not i highly reccomend you do.
You said that you know you are beautiful right? if you know then why do you have to prove it to anyone? I think this could be OCD related but i honestly think it is alot deeper than that. and this is something you need to work through in therepy.
please please please becareful, and remeber being beautiful on this inside is what counts in the end