Your handy guide to Mac
Who is he?
Mac works in advertising.
Who's he seeing?
Well, it's complicated - wanted to get his wife Jo back, realised the family was falling apart and it's easier to move on, filing for divorce.
Yeah, but, really - who is he seeing?
He's had a bit of a will they, won't they with Catherine but they're now just good friends (how many times have you heard that??)
Where did we leave him at the end of season one?
In a bit of turmoil actually, eldest son Noah was in a serious accident - and his ex-wife is pregnant to another man