Girlfriend hangs out with guy friend alone?

A simple back story : my girlfriend and I have been dating for 2 and a half months now. We have fallen in love and are very happy with each other. Like any relationship there are ups and downs but we make it through, together. We have seen each other once and are planning to see each other soon. Distance makes it hard.

Last Thursday a close girl friend of mine asked me to hangout alone. I told her, I don't think it is appropriate, because it would make my girlfriend uncomfortable. And when I told my girlfriend on the phone what happened she said "you better not." As in not see her alone.

We were talking and everything was going well. However yesterday a lot changed and it really opened my eyes in both positive and negative ways.

My girlfriend has a best guy friend, Devin. Yesterday she asked me if it was okay to go to his house, she needed to do some school work and she could borrow his lab-top. But they would be alone. She reminds me that she and him have a brother and sister relationship. However before I could even let her know now how I felt, she basically said "I don't care how you get, if you get mad or sad or upset or whatever, it is school work and that is it." I trust her enough to know she wouldn't do anything, yet my mind always wanders through the worst possible scenarios. I'm not the the of guy to tell her who she can and cannot hangout with.

It has been bothering me how she said she doesn't really care how it made me feel. When I clearly care how it makes her feel if a girl ask me to hang out. She seems very hypocritical at times. She says one thing but does another. But she has never given me any reason not to trust her.

I just need some advice on where to go from here?

Thank you.

Girlfriend hangs out with guy friend alone?
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