I find it funny how so many people are complaining about Brian and Jillian like its something every single episode talks about. Jillian hasnt been mentioned or referenced for quite a while but the minute she comes back, people act like she's an overused character.
The Brian/Jillian on/off thing isnt an on/off thing. They went out, they broke up, Brian tries to get her back and learns she's moved on. Next Jillian appearance we find out she's getting married and Brian tries to win her back but comes to terms that she's over him.
That's 2 episodes. No need to make this situation any more than it is.