Scorpio bf's Libra buddy doesn't like me

I posted here about the trials and tribulations with my Scorpio. After some bizarre gamesmanship from him, all is well - for now. But there's a new wrinkle - his Libran good buddy apparently can't stand me. It was pretty evident to me, but my bf did a non-confirmation confirmation when I asked him directly. I'm hurt, I guess, because who wouldn't be hurt if a SO's good friend didn't like her, but I'm also baffled. I've met this man a handful of times and I really like him, and enjoyed talking to him, though as time went on, it was evident to me that he was patiently tolerating me rather than engaging with me. He's quirky and cool and I thought he and my bf were the type that personifies the "buddy movie" genre, and I loved watching them interact. I never cut into their "chill time" or demanded my bf cancel plans he had with this friend to be with me. I also never forced myself on this guy. There have been a few times where my bf has been like "Hey, let's hang at Steve's" and I said, "Well, that's cool with me if it's cool with Steve. Give him a call" And he would, and sure enough, it would NOT be cool with Steve. My bf seemed annoyed by that, but it was fine with me - his apartment, his rules.

But that he doesn't like me dismays me because I DO like HIM as a person. My bf didn't want to go into it but just shrugged and asked me what it mattered. It doesn't, in the long run. This isn't Sesame Street where everyone has to get along, and he is allowed to dislike anyone he wants for any reason, but I guess I am baffled as to WHY he does not like me in particular. I have gotten along well with Libras in the past and found them, in fact, to be very nonjudgmental really, so for this man to judge me on what he perceives he knows about me troubles me.