Do you have any idea what is that song about? In short, it was about a guy who wants his ex to be back to him (although he did mistakes, he screwed up, now he apologized and he wanted to go back in the relationship)
One thing from me.. how about stop saying sorry and not doing the thing you will be sorry for?
Some chances only comes once, do not screw things up, especially when it's because of your stupid selfishness.
If it were me, I am not a second-chance-giver. You screwing things up means go away, go fuck yourself and stay away from me. Selfish people should never have a relationship with anyone.
Damn this anger again!