Do you know that I think I'm losing faith in relationships?
Why would you think you are losing faith in your relationship?
I was hurt by most of my old girlfriends and I am sick of it.
Being mistreated by old partners can be painful, but letting the past dictate your view on future relationships just gets you stuck. Shake off your bad experiences and realize that things don't have to be the way they were.
I don't know how to. I just proved to myself that I'm complete alone.
Having a relationship takes a lot of trial and error, and it's not something that you simply give up on. It feels bad to break up, but it's better than being in a bad relationship. Later on, you will find your true love as long as you don't give up.