Jennifer Lothrop

Abby confesses that she's the mysterious saboteur warning other women to stay away from Barney, but she reconciles her differences with him when they both realise that they have a shared hatred of Ted. They go to the bar and flaunt their faux romance but when Barney goes overboard and proposes to Abby, she takes his offer seriously.

Elliot realises that nothing good has happened to her since she began work at the Sacred Heart hospital, so she gives herself a drastic makeover, both inside and out in the hope that the new Elliot will have more luck.

Jeff (Simon Rex) warns Holly (Amanda Bynes) not to get too chummy with his ex-girlfriend (Rebecca Gayheart) because Val (Jennie Garth) is threatened by her.

At a surprise party Marsh has thrown for Chuck, Kelly and Chuck stumble upon an incriminating photo from their past together and must take evasive action.