<human>: Summarize the given text in a few sentences.

A little bit of info regarding this. My best friend (of 7 years) lives about 4 hours away from us and lately both he and my roommate (of 3 years) have been getting closer and closer. He came over to visit back in January and first met my roommate when we went out for drinks (her bf was away on vacation). They instantly hit it off. He's been planning to come over more often to see her, but she hangs out with her bf so often, they are basically sneaking behind his back to do so. They've been together for about a year,  but she jumped onto him a month after she ended a relationship with her ex. 

It's gotten to the point where my best friend and roommate have planned to go to graduate school together in the future, so  she would be moving out leaving me with a vacant spot. When my roommate suggested that her bf move in to my apartment, he mentioned that he thought they (her and her bf) were planning on going to the same school if they get in. She totally forgot (and to anyone that would suggest I make advances on the bf instead, I'm in a relationship).

My friend and roommate not done anything sexual but the intent is definitely there. They hold hands, snuggle on the couch, etc. 

The bf, who I met a few months ago, has no idea. But he's a really nice guy and I feel as though I cannot just ignore idly as all of this is happening...

I feel horrible knowing all of this is taking place... what do you think I should do? I do not think I should just stay silent, but I do not know who to speak to first. Should I intervene and have the potential of losing my friend and roommate? Is it in my place to have a say in this?
<bot>: Roommate and friend are seeing each other; nothing extremely physical other than cuddling. Roommates bf has no clue. Do I have a place to say anything in this matter?