<human>: Condense the text into a few key points

One of my roommates has been my best friend throughout college, and though we've gotten through strains in our friendship before, I feel like it's dwindling out and now it just feels awkward to be around her, and I have no idea how do deal with it.

About a year ago, we decided we would move in together, and officially started living together in September with two other girls. The two other girls and I bonded pretty well pretty fast, but my friend (I'll call her L) was always so busy with her new boyfriend and work that she was hardly around. We could tell that L kind of resented that me and roommates always were able to spend time together, but at the same time, L could have made a little more effort, maybe sparing one of the 4 days out of the week that she spends with her SO to spend time with us (or just me).

I feel a little resentment towards L too. I get that in a new relationship you want to spend a lot of time with your SO (and he's a great person), but I feel left in the dust now. Before we moved in together and before this relationship, L and I had all these fun plans, but we haven't spent any time together since moving in, and she is almost never without her SO.

She also just became sour-- she talks down to me and others a lot and in general has a bad attitude, and so I decided to separate myself from her because I have a ton of other stuff going on in my life and I didn't want to deal with her negative energy.

I'm fine with this friendship ending, I've been expecting it and tbh she can be pretty toxic. However, it just feels awkward to be around her and we tend to avoid each other, avoiding the negative energy that's still between us. How can I still live comfortably and also avoid any uncomfortable confrontation?
<bot>: My friendship with a current roommate is dwindling out, and now I'm stuck with a lot of awkwardness and negative energy between us. How do I deal with it, both personally and when with her?