I’ve done so many horrible things (I teased my boyfriend behind his back when we first got together) and lied about a lot. I've talked to other guys (innocently) online and hung out my guy friends alone. I’ve gotten mad (not to his face) and I can’t take the guilt. I want to save him from me and spare him from my web of lies. He doesn’t know about any of this. Should I leave him for his own good or change my behavior?