My boyfriend and I have been dating for almost a year and a half and although we have really intimate talks, I feel like I don't know him. He's told me he loves me, confessed he's cheated on every girlfriend he's ever had, but says he feel differently about me. He's thoughtful, buys me gifts, and plans romantic weekends, but I often can't get a hold of him during the week. I’ll call and leave a message and then get a short text response an hour or two later. When we're together, I feel like everything is fine, but when we're apart, I'm not sure. I don't know how much of my suspicion that he may be seeing someone else is a projection and how much is common sense.