What makes us incompatible, exactly? A bad habit that one of us possesses? I'm sure everyone has bad habits in their lives. Does that mean they aren't able to be compatible with anyone except for those who have the same bad habits? Is it that all relationships involve people with the exact same habits? Maybe some do have similar habits, but couples also can have very different habits as well, varying from minor to major. People are different. That doesn't always mean they're incompatible. And how can I just decide whether we're incompatible or not when we haven't even had a chance to know each other yet? Don't you need to know someone in order to decide whether you're compatible with them or not? What if you really are compatible, but for a flaw or two (in this case, smoking)? Does that mean the rest of the compatibility should be completely forgotten? What I'm trying to say is I don't know whether we're compatible or not. If I don't even know, surely I shouldn't trust that you would know, either (not that you could be right, because for all I know, you very well could be). Sure, smoking is one factor on his part that makes us incompatible. But I don't think compatibility is based solely on ONE thing and one thing only.