Confused

I am engaged to a guy I have been with for seven years. WE have been living together and I have helped raise his two daughters. We had a son together who passed away about two years ago. This was a special time for me and my boyfriend. We worked really well as a couple and grew really close. However, for the last couple of months, we have grown apart. He has been talking to a girl through facebook and text a lot as if they were in a relationship. He hasn't physically cheated on me since she lives seven hours away but he has an emotional connection with her, I guess. About two weeks ago, he left me. He has been staying at his dad's and his stuff is till here at the house but he he is saying he wants to leave and not be with me. I'm so confused and just want to work things out but he doesn't seem to want to. How did I let us grow apart? What do I do? Is it too late?

I'm so sorry to hear about this. My ex left me out of the blue as well, leaving me shattered. I didn't get it - we'd been through a lot together and I was SO good to him! Interestingly, we had been together for 7 years also, same as you. The "7 year itch," maybe?

He may think she has something you don't and his conscience will not let him lie to you so he has moved out. Maybe he is right and more likely wrong. But it is clear that something is lacking he thinks he will get from her. He is not telling you what he is thinking. You could ask him in a nonthreatening way in a public place like over lunch.