Does this make me a bad mom?

So my ex husband and I switch our daughter every other week. It’s usually on a Sunday. Well next Sunday is Mother’s Day and would be the day I get her back but I asked my ex husband if he could keep my daughter for an extra night so my fiancé and I could spend a day together. It’s the only day he has off that we get a chance to spend time alone together in probably close to over a month. I don’t get to see or spend time with my fiancé, maybe 30 mins a day because he works a lot…too much. Whenever my ex husbands asks me if I can keep my daughter an extra day or weekend to spend time with his girlfriend, I say yes. Because I know time alone with your partner is just as important. But he swears since it’s Mother’s Day that it makes me a bad mom. I told him I could just Mothers Day the day after with her…She’s 3. She won’t know the difference. What is your opinions?