Quarantine Binge - Season 6

So, I'm binging (obvi, cause what else is there to do?) and I'm starting Season 6 for the first time. This whole Buddy - Chelsea - Whitney - Heather situation is so fucking irritating to me. I realize that it's a reality show so they're clearly playing up the drama, but I feel like Whitney should have known from jump that there was no good ending to this situation. If your two best friends are going to date each other, you have to be prepared for the possibility that they break up and so does your friendship trio. I'm confused about Whitney acting all concerned for Heather's feelings should she be friendly with Chelsea cause she already moved Buddy into the house with her after the breakup & hid it from Heather..? The rules for being best friends with this girl make no sense to me😅