Now I want to break up with this girl and work on my relationship with my girlfriend but I think she would tell her because she knows her now and has her number.
Most Helpful Girl
If you actually really care about your girlfriend and the relationship, it's time to be honest. You've betrayed her for a while now and it's time to put your cards on the table. Don't try some sinister and perfidious way to get out of this situation with further lies and deceptions. It's time to own up to what you've done. Your girlfriend deserves to know the truth and to decide whether SHE still wants to work on your relationship.