You should not. Just face it. you need to move on.
You can't trust her anymore. Give up.
get a new girlfriend or boyfriend
However old your boyfriend or girlfriend is. :)
you can't unless you ask him
Lady Gaga Never Had A Boyfriend Or A Girlfriend
get over it
no
Ex-girlfriend or boyfriend.
until...19 years old
Boyfriend and girlfriend
If he has a girlfriend, don't go back. He will do the exact same thing to you, that he will have to do to his current girlfriend. Good Luck!
If the boyfriend or girlfriend hold you back from your purpose.