In a teaser for Monday's show, Stephanie Pratt's boyfriend Josh slams Lucy for not being a good friend to Steph.
"I don't think she's a good friend to you. I think she's incredibly jealous which all stems from the fact that I think fundamentally she is very unhappy," Josh tells Steph in a conversation.
In another clip, Stephanie's BFF Lucy confronts Josh in a bar, saying: "Apparently you have a massive issue with me?"
Josh replies: "Take some f**king responsibility."
Lucy hits back: "I'm not the one with the issue," before walking away.
We're not sure where this has all stemmed from, but the clash upsets Steph, as she stands next to boyfriend Josh in tears.
What on earth is going on?! One thing's for sure, we don't think this will end well!
Referencing their dispute on Twitter last night, Lucy tweeted: "I'm glad people wait until I come back on TV to raise their issues with me #nexttime."
Lucy made her return to Chelsea in last night's episode having been absent from the first three eps of the new series as she was away travelling.
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