How do I know when it is over?

My husband of less than one year has left. When he left, he took everything. I mean everything. He says that it was his stuff and he is right because we sold all my stuff when we got together 2 years prior. I have 2 kids from a previous marriage and he has one. He was cheated on and so was I. We were high school sweethearts 15 years ago and rekindled our love about 2 and a half years ago. He was THE PERFECT husband. When things started going sour in his relationship with his son, so did our marriage. It has been 2 weeks. He livevs around the corner from me. I saw a car in the driveway late at night and confronted him. He said that it is an old friend of his and nothing happened. She helped him see where he was wrong in our marriage. We are both Christians and both vowed to do everything to make this work. Now, he tells me it is over because I confronted him. What in the world do I do now? Oh, it was a TEXT message at that. I think I am owed more than that. Is it really over?????