Welcome to the forum, Ally =).
Your partner is a male; males almost always tend to lose a lot faster then us ladies for some weird, annoying reason! It frustrates all women, seriously! Please don’t give up. I weighed 293 in February when I began Keto, and I am now 250, and my goal weight is 120. I still have 130 pounds to lose, and I just had a stall of almost 2 months, with no weight loss. I was very frustrated, but I didn’t give up, and now I am losing again.
If you try to stick to these simple rules this should help:
Eat no more than 20 grams of carbs a day, NO sugar (some people even have issues eating artificial sweeteners so maybe for now, cut them out as well), get enough calories! from proteins and healthy fats, and drink a lot of water, and Electrolytes. I started Keto when my blood pressure was over 200 and my doctor wanted to put me on the blood pressure meds and I said no, and have brought it down significantly with Keto.
I am 54, I have 5 kids and 2 grand children, and have a terrible history of eating disorders and yo-yo dieting since I was a pre-teen, so if I can do this at my age, you can do this, 20 years younger than me! You will feel amazing, and get in great shape, and then be able to start your little family, and have the entire family on Keto.
I wish I knew back then what I know now, and could have done that for my own children. Please stick around here, we all want you to succeed. There is a wealth of information, support, guidance and encouragement on this forum. Please don’t give up =). You can do this!