The Shahs of Sunset stars go white-water rafting on the upcoming episode, but the water isn't the only thing that's unstable.

While they're on the raft, Mercedes Javid and Golnesa Gharachedaghi argue about Mercedes having told GG's boyfriend that she recently kissed someone else.

After Reza tells GG to have thick skin, GG says, "I have thick skin, but don't try to f—k me over. That's not having thick skin — that's shady."

MJ replies, "If we're friends, which we are, you always come first. I would never throw you under the bus as your friend."

"What I did was mischievous, however..." MJ says, to which GG says, "There's always a 'however.'"

GG then wants to know, "Should we have an equivalent relationship, or we just do as we want to do?"

"I don't know why MJ's so disloyal, but this is my man, this is my relationship," GG tells us. "Sean and I have had fights about this, so she definitely owes me an apology for what she did."

Finally, GG asks MJ is she's sorry for what she told Sean. "I'm just curious — are you genuinely sorry, or are you not?"

MJ then replies, "No, I'm not." So much for these two making progress!

SourceBravo