Dexter and student Charlotte supposedly met online via a 'Sugar Daddy' website, which has seen Dexter help pay model Charlotte's bills and loans.
But despite openly admitting to giving him a "hall pass" on the show, Charlotte's not been too happy with Dex's latest antics involving Charlie.
Dexter confessed to Charlie earlier in the week that he had feelings for her.
But Charlie wasn't convinced, telling him: "No I don’t believe that for a second because I know you look at people…Look at the way you look at Hazel, you stare all the into her eyes.”
Watching the latest action from the house last night, where Dex insisted his feelings for Charlie were real, Charlotte tweeted: "What are you playing at?!"
She added: "My hands are washed from you have fun."
And when one fellow Tweeter asked: "Did you just become single?", she replied: "yep"
Looks like Dexter will have some explaining to do when he leaves...
BBUK airs nightly on Channel 5.