Well, lets see.
To the original post: I understand that you would be a bit jealous. Though, I think at the start you should have actually told her that you were feeling a bit jealous of her going out with these friends. I understand you would be a little worried when she is on match.com after the fact that you too are together. I would probably go to the site and look at her profile and see if its just looking for friends. If not, thats a deffinite answer there.

Since your having so many arguments already this is a sign that you both can't really trust each other or atleast have a normal conversation. She should have been more open to start with. So its understandable that your concerned. You just need to tell her your thoughts and feelings. Try rationally talking to her instead of arguing throughout the situation. If things can't be talked out normally, I would probably suggest that maybe she isn't the right person for you.

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