Hmmm seems like she is playing you to me. Hard to know the complete dynamics in the relationship but if she cared she wouldn't be so defensive. If she really was into you she wouldn't be on Match.com. If she cared about you she wouldn't be so late and if so she would be curteous and call. She wouldn't be meeting guys or hanging out with new guys if she wasn't looking to make one fall for her and then she could leave you. That is just my opinion and you know your relationship better than anyone else.

I am learning the hard way right now that I need to be more aware of the signals and get out before it goes to deep and I get burned. The problem is being honest with yourself for you already know the behavior is unacceptable. Your ego or fear of being alone is keeping you in this relationship. You write well and seem intelligent enough that I trust you know what is going on. With the intelligence displayed I trust you know and will do the right thing.

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"A gentleman is one who considers the rights of others before his own feelings; and the feelings of others before his own rights"