I think this is a difficult one , ultimately I do truly believe that if you really love him it shouldn't be so cut and dried and you do seem to be very focused on yourself and the fact that he should be doing it to please you which is ultimately a totally ineffective and unhealthy reason for anyone to change themselves
However life is just not that simple ....I piled the weight on having two children in three years but last Feb I did something about it and have lost 6 stone
I am very careful now to take care of myself and honestly it caused issues in my already failing marriage , myou confidence increased and honestly I have really struggled to find my still overweight dh attractive. ...I don't want to be shallow and I didn't say anything but it did affect how I saw him
He also struggled with my change and the increase in confidence not because he was or is an ass but because it changed our dynamic ....whereas before we would sit in and eat it now go out for a run
However I never forget when I was overweight dh never made me feel crap and never placed expectations on me for my appearance he appreciated that I had carried our children and that had an impact
He always told me I was beautiful and was supportive until I was ready to change and even now that we have separated still tells me this
It is difficult because he clearly has expectations on you and it sounds as if both you're perspectives are self involved more focused on the impact or impression the other gives yourself in which case think about leaving
But I guess my point is my marriage failed because it failed nothing to do with weiget it was a symptom. ...ultimately if I was still truly in love with dh then something as vacuous as weight gain or loss would not have split us
If you really are that set on him changing to please you then you do need to think about leaving for him and you because it's patently unhealthy