Question: When Phil and Justine talk about her being pregnant, she wonders if anything is "really" going to change. He asks what she means, and the scene ends. What did she mean?
Question: How come Justine never tells Phil, apparently, about Bubba blackmailing her to have sex with him? Phil found out that she had an affair anyway, so Bubba can no longer threaten her.
Answer: I think she wanted to put the whole situation behind her. When Phil asked if she cheated with the security guard from work, she let him believe it. She was able to convince him that the baby was definitely his, not the guard's. Telling him about Bubba would only make the situation worse. Also, Bubba had seen her with Holden, so he could try and convince Phil that she was lying about the security guard. It would create a bigger mess. She decided to accept her life as it was.