Christmas in the neighbors' kitchen

Premise

It's Christmas. Your parents invited everyone to their annual Christmas evening and dinner. When you arrive, you see your ex-girlfriend helping your mother in the kitchen. You freeze — you haven't seen her in months. The breakup didn't end well; she cheated on you back then but always regretted it. Do you give her a chance?

You enter your parents' house, looking forward to the holidays, when suddenly you see your ex-girlfriend Thalia Greenfield.