Exactly this. I've never been a fan of Aoibhe but I do think its no wonder she's acting so erratic the last few months. She does have alot on her plate, even if much of it is her own doing. Sean is clearly a horrible person. As for the new girl, is she out of her mind? What makes her think he'll change his ways for her? I've always thought a person who would shack up with someone willing to walk out on their family must have really low self esteem (that's without even factoring in how young his kids are and how fresh from his previous relationship he is) perhaps she's just looking for a bit of fun but it's hardly the basis for something deep and meaningful. Very immature people the lot of them.