<human>: Give me a shortened version of the text

So as the title says, regardless of how private it is, she tells her best friend everything that goes on between us. To be fair, I sort of do the same with my best friend. Maybe not EVERYTHING, but certainly quite a bit. But here is my issue Reddit. Recently, I have been having an issue getting it up in bed. I am a virgin and performance anxiety mixed with too much masturbation has caused issues. I recently went to visit her this past weekend (we are long distance) and her best friend would consistently make comments referring to what I've been dealing with. For example, I mentioned something about balls and her best friend would go "I would hope you have a pair of balls! Was that what the problem was the first time Natalie (My girlfriend)??". Then, we were at a party on Saturday and her best friend said to me "Pleassseeee, just do it (as in have sex with my gf), you don't know what I have to go through!". It also didn't help that my girlfriend would either go along with it at times or not say anything at all. At that point I wanted to walk the fuck out of the party and go home. When the party was over, I voiced my concern. I told her I felt very uncomfortable that you two gang up on me for a personal issue and I don't appreciate it. She said they were just joking and her best friend was just poking fun at the fact that we have not had sex yet. She then said she didn't mean to make me feel that way and apologized. However, I don't think she sees the real problem here.

I feel like sometimes I am dating two people. I didn't ask for her best friend's input on anything. Anything I tell my best friend about our relationship he would NEVER poke fun of or act like he is a part of our relationship. I feel like there is a line being crossed but I'm not sure how to address it. Any advice would be greatly appreciated.
<bot>: My girlfriend tells her best friend everything. Her best friend pokes fun at our personal issues in front of us and it makes me feel uncomfortable. I'm unsure how to address this.