Secondly, as a relationship it's not even well-written. Stolas is a married man with a teenage daughter having an affair with a work colleague, but we're supposed to root for Stolas almost unconditionally. They try to do this by making Stella as unlikeable as possible, because obviously if his wife is a bitch then she deserves to get cheated on. As for how this makes his teenage daughter feel, the show tries to address this by... having another character essentially just tell her to be happy for her father. Yeah, great, guess we don't need to ask any more questions there.