I have been seeing a girl exclusively for 8 months now. She's Indian and very attractive, probably literally a 9 on the HB scale. She can act a little crazy at times (as per the universal crazy hot matrix), but she seems to carry a lot of good values bestowed upon her by her Indian culture.

Me: I'm average looking, tall, somewhat in shape, great career and (seem to be) fairly likeable.

So anyway, heres the situation: She often spends time at my apartment which I currently share with another guys. This roommate is what you might to refer to as the definition of "Alpha": He has a great career, probably top 10% in terms of attractiveness, lots of interesting hobbies, in incredible shape and he acts completely stoic. Basically he's most women's wet dream. I'm not bad myself, but he is just simply on a different level.

So anyway, my girlfriend eventually confided in me that my roommate has been flirting with her. This flirting is not overt. It is very subtle and involves things like holding eye contact too long, and tone of voice when he speaks to her. But yet it is very noticeable, even by me. I can feel the energy exchange between them. Basically he wants to fuck her and she probably wouldn't mind fucking him (although she would never tell me this)

My girlfriend and I talked openly about the situation. I've been in a similar situation before in my past that did not end well for me. She reassured me she would never cross any boundaries and I have nothing to worry about.

However, I don't like it. Mostly I don't like the fact that my roommate is essentially being a dickhead but not in an overt-enough way for me to call him on it.

So TRP, is there anything I can do to disrupt this dynamic in order to break off the energy transfer between the two of them?

Thanks.