ok, little background. I'm first year at Uni (sheffield) and i've had a girlfriend for 16 months. She's second year of sixth form so we've had a distance relationship (about an hour away) since september.
Things have gone better than expected in the first term, we see each other regularly enough and speak very often. But in the past week, since i've come back to Uni from christmas, it's not been too well. She's got a lot of stresses at home with family and exams, and we've had a few arguements over the past week. Also, she's admitted that she's had lusting feelings for a guy in her year, and they both spoke about their feelings last night. She says nothing happened last night as he said it was up to her, but tonight she told me she kissed him.
She said she did so because she had to try it to reassure herself that i was the one she wanted, and that now she knows only has feelings for me, but i just dont know how to feel about it. I've arranged to see her tomorrow to try and talk to her about it, but i dont know what to do.
so what do i do? or anyone had any other, similar experiences?

I should just go get hammered, cheat on her, and beat the guy up shouldnt i?

Apologies for adding to the amount of shit threads, but there's no one on msn to speak to about it and i just needed to vent it.