'Enders' Roxy in pregnancy dilemma

EastEnders' Roxy Mitchell is left questioning the identity of her unborn child's father after sleeping with Jack Branning, The Sun reports.

Roxy is currently seeing Sean Slater (Rob Kazinsky) but will reportedly have a drunken fling with Jack (Scott Maslen), her sister's boyfriend, in an upcoming plot line.

Roxy and Jack vow to keep the affair a secret but are faced with a dilemma when Roxy discovers she is pregnant.

"Viewers will be shocked when Roxy jumps into bed with Jack. It’s the ultimate betrayal," an insider revealed.

"Ronnie would be furious with both of them if she found out. They try to keep it a secret by pretending it never happened because Sean will also go ballistic.

"But once Roxy realises there’s a baby on the way her secret starts to prove very difficult to keep."

The storyline will run on the soap in a fortnight's time.