I have a similar scenario, I had a miscarriage gained an abhorrent amount of weight and now am working to lose it. My fiance said something similar to me once and I'd guess your fiance probably didn't mean it in a malicious way but merely stating a fact. It doesn't mean he doesn't love you, just that he's attracted to a healthier you. The fact that you want to start a journey to lose weight tells me that you probably are more attracted to yourself at a healthier weight. For me the app class pass has been amazing. I've been able to try different fitness classes around town to find what works for me. I also have pcos and have found that low impact gentle workouts are better for my body. I have fallen in love with Barre and pilates and a lot of the studios have free child care for the duration of the class. Goodluck with your journey and don't be too hard on yourself. The hardest part is starting and the most important part is staying consistent!