"Well just because I'm not gonna spill my guts out to you doesn't mean I don't want to hang around you. You make it sound like it's... worse than it is, really." ... Maybe it's her definition of 'friends' that Yukari has wrong, but... she doesn't think so. "I wouldn't have invited you at all if I didn't at least wanna hang out."

And yes, taking a break from boys is at least 40% of what's going on here, because Yukari, while she's more or less forgiven her boyfriend for his little breach of trust, still thinks it's more fun to hang out with just the girls every so often. "Like I said, I didn't think this was this kinda bar. If it had been just a regular nightclub, this whole thing would be a whoooole lot less weird."