It's hard to stay grounded when you're floating on air! But when you first start dating a guy it's important to notice signs that he might not be The One. 'Cause the truth is that you learn a lot about a person in those beginning moments, and "tiny" things that bug you could reach full-blown proportions as time goes on. Once you get past the fact that he's h-o-t-t (!), here are some personality flaws you should watch out for…

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