Issues related to mental health. Me.

1. I met a girl online seven months back and we got into relation, a week ago she broke up with me due to her family issues but we are still friends. The problem is that i don't want to loose her friendship and i am trying hard but i feel upset each time i recall that she can't stay with me in a relationship. 2. I went to college for the first day and i came across a reflection of myself and i looked really ugly and dull which shattered my confidence, then i went in and tried to find my class but didn't gathered the confidence to ask someone for help. Then i stepped out and in my mind i thought that everybody is looking at me and laughing. These incidents made my self esteem so low that i haven't went to college after that day and i still don't know where my class is. I have always been like this i use to think of doing something like greeting someone or talk to a person but something restricts me and keeps me from doing what i really want. It would be great if someone could help me.