Am i taking this the wrong way?

I've been "seeing" this guy for a short time. We've been hanging out whenever we both have time off. He's never, ever given me a reason to think he's lying or anything but I've been cheating on so many times so I'm just nervous he doesn't "want" me. I asked him when will we make things official and he wrote this. Is this good news or bad? I think I'm overreacting.