Just continue doing what you are doing. Even if it is only for yourself and for your health. Part of me understands your partner as well. 117kg is a lot for 1.78 cm . By exercising multiple times/week one would assume someone of your size/weight would lose more than 2kg in 2 weeks. So I agree with other comments that you need a total lifestyle change (healthy eating in combination with sports) and no doubt you will feel better and your wife will be attracted to you again.