<human>: Provide a brief overview of the text.

Friendship with my best friend: 4 years
Relationship with my boyfriend: Just shy of 2 years.
All three of us are 22 years old.

My best friend and I are very tight, and have had very few arguments with each other. We met freshman year of college and made it to after graduation with only one real tiff. Tensions only began to rise after we moved in with each other. This, however, is to be expected, and we just need to communicate.

Understandably, part of this process is being able to vent your frustrations. Just like I vent about her, I know she vents about me. This I'm completely fine with…with the exception that the person she vents to is my SO.

When he told me she was upset with me, I asked him what she said. Like the honorable fellow he is, he didn't reveal it due to friend confidentiality. Thats understandable, but… I still don't feel comfortable with her complaining about me to him. I feel this is pretty tactless, and that she could have complained to another friend of hers. This also makes my boyfriend feel obliged to act as an arbitrator, whose more focused on damage control instead of being the person I need to listen and share my anger with. His advice and defense of her action only ends up making me more angry.

Under normal circumstances, I believe this would be unacceptable. The thing is, my boyfriend and my best friend are very close friends. They rely on each other for help and support. I feel it is not my place to tell them how to conduct their friendship. However, that doesn't get rid of the fact that I still don't like it, and it feels invasive.

So, Reddit, am I right to feel that it is inappropriate for my best friend to vent about her problems with me to my boyfriend? Would it be wrong of me to ask my boyfriend to refrain from listening? Or am I overreacting? And I should respect this part of their friendship, even if its at my expense?
<bot>: My best friend vents to my boyfriend about me. I'm really uncomfortable with this, but don't know if its fair to ask her to refrain from venting about me to my SO.