In case you missed this "War Of The Roses", Doug just got out of rehab and now isn't allowed outside of his house. He was arrested for drunk driving. Julie and Doug have been on and off for a while - more on than off. Now, since Doug can't leave the house, Julie is going out with new people. Since Doug went away for a while, Julie seems to have continued her life without Doug.
Doug doesn't understand where things went wrong. Just because he has this ankle monitor, he can still get a job and is "the same Doug." We can think of a few reasons Julie is being distant... Listen to this "War Of The Roses" here: