Seeing Ex GF for first time since breakup

My GF of 3.5 years and I broke up approx. 3 months ago. Thankfully it wasn’t a messy breakup. We initially went 6 – 7 weeks no contact, and then began texting every few days, the texts have always been positive, and the other week she called me to share some exciting news. It’s my intention to do all I can to convince her through my actions (making positive changes in life, changing habits etc) that we should have another shot at the relationship. Tomorrow night we will be seeing each other for the first time since the breakup; we are going for a casual bite to eat and then to see a hit comedy play that’s in town.

She has asked a number of times as to wether I will mention that we are catching up to my parents; she has told hers. I’ve never answered. I want to give an answer that will hopefully increase her attraction, even just a little. Would telling her that I haven’t told them be best? That way she will feel the need for the validation of me telling them?