To me there is no question in my mind this guy isn't right for you even if he hasn't cheated with this other girl he has emotionally cheated u said he should erase her off his page and then he keeps texting her. He wasn't thinking about you when he started forming a relationship with this other girl. He wasn't thinking of you when he continued to text her. I know it's hard to leave someone you care about I know it's always easier said then done but this guy no offense to you but sound like the biggest dirt bag I have ever heard of. Sometimes the hardest wound to heal is an emotional wound and I believe it's because it's invisible to the naked eye. Please do yourself a favor get rid of this guy and when and if he tries coming back you say sorry I deserve something better than a guy I can't even trust to go to the bathroom in my own home without flirting another women. This is the most important thing I will say to you YOU DESERVE BETTER. No back talk now. Don't make excuses. I don't care if you have kids, I don't care if you think ur not the best looking or whatever other reasoning your about to make that will defend his action. YOU DESERVE BETTER. Now say it to yourself and believe it.