Or, put another way, the addict (the woman) can't help herself. But the guy made a *choice* to use his phone. Seems to me the person who had a choice has less reason to explain his behaviour.
It was a poor example. Both are terrible behaviour and you can't dismiss either one, IMO. The guy does not get off any easier than the woman b/c it was 'just sex'. What if he brought home an STD, or worse?
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh