Louise does have a boyfriend, he's the guy that Jodie Marsh married in that reality show... So for her to be carrying on with Jay is pretty bad
Not to mention that he is an absolute vile pig, who only tried to woo her to shag her. If Louise heard his chats with Anton & Aden about her I am sure she wouldn't have gone near him!
I bet he was slipping a fist in her too as on the clip they showed on BOTS she made a moaning noise...