I have an aunt who lost 60 kg and got off meds by eating breakfast late and dinner early, and skipping lunch. Then she got a new boyfriend and started cooking big dinners for him and gained everything back and got back on the meds and added more meds.
That's pretty typical. Men don't understand why many women get fat once they have a partner, and why they then lose weight after a breakup, but it's like... there is only one factor changing in this situation. 😏