Ignacio,
Begin your new life today, if you are destined to be with your girlfriend it will happen when you least expect it.
You cannot commit to someone who does not want to commit to you. period.
You can express your truthfulness all you want, but if the other person is not listening what good is it?
I don't know, it sounds like you cheated on your girlfriend after you had been together for 1/2 a year. [Year and a half relationship... cheated on her last year at this time of year]
After breaking up, initially no contact is best. How do you expect her to miss you if you are constantly "passing by her apartment"? When you move out and get a new phone number, call her to let her know.
BAD IDEA. You sound like a stalker. If I was her and you started doing that to me... 2 words, Restraining Order.
Now you are talking! Stop feeling sorry for yourself, get out of your parent's house, get a job and throw yourself into it. What have you always wanted to do? Now is your chance to start a career from the ground up, take advantage of it! If you have to start at the lowest position, throw all your energy into it and work your way up the ladder.
If the two of you are destined to be together it will happen when you least expect it! If you sit in the basement staring at the phone it will never ring, so get out there and start your new life!
