LadyH I still haven't recovered from the time you took your sons ice skating and swimming in the same afternoon. Don't think I'd ever manage that in the same year, let alone day.
Anyway, here are my wild plot guesses -
Juliet was raped. By someone we haven't seen yet - possibly the actor Greyskull's friend knows. He could have been a stranger to Juliet. Joe blamed her for putting herself in a vulnerable position and getting raped. He then starts become (more) obssessive about her 'safety' and her movements and her hygiene. He also starts raping her anally, no longer having sex with her vaginally because she was 'contaminated' by the rapist. She goes on anti-depressants. She doesn't go out.
Juliet tells the doctor friend that she was raped, but he is sworn to secrecy. He knows that the baby isn't Joe's but the rapist. She has sworn him to secrecy which is why he's cagey about having seen her.
The watch is a red herring - doesn't she find at home anyway? It's plot purpose is to make us think she was having an affair with the doctor.
Not quite sure what the 'I was doing it for you' comment by Juliet to Ella is about, other than protecting her from an increasingly obssessive and abusive father. Joe would freak if he finds out she's pregnant and will know it's not his.
The life insurance is about the baby.
Whaddya think?