My girlfriend and I broke up for about 4 months after dating for 6. During this period she slept with my roommates friend. We've been back together for 2 months. 

I love her. I want to forget about this and put it behind me. I don't think there's anything wrong with what she did. We weren't dating after all.

The problem is that the guy who slept with her is over at my house all the time. Being around him only reminds me of what happened between my GF and him. Being around him makes me feel insecure. I can't even look him in the eye. The thought of her with someone else makes me feel sick.
user
gf slept with acquaintance
assistant
My girlfriend and I broke up for about 4 months after dating for 6. During this period she slept with my roommates friend. We've been back together for 2 months. 

I love her. I want to forget about this and put it behind me. I don't think there's anything wrong with what she did. We weren't dating after all.

The problem is that the guy who slept with her is over at my house all the time. Being around him only reminds me of what happened between my GF and him. Being around him makes me feel insecure. I can't even look him in the eye. The thought of her with someone else makes me feel sick.
user
GF slept with an
assistant