I broke up with a girl after seeing scars on her left arm.
Why did the scars make you break up with her?
I must say I was a little freaked out and concerned
Relationships are hard but if you don't think you want to be with them or you don't like something about them it is better to end the relationship. It would pointless to continue if there is no future.
I don't think it is that bad.
It is a little superficial, but it's your life and you get to decide who you spend it with. However, if you think this girl is actively hurting herself or getting hurt, you should try and get her help even if you're not in a relationship.