You should stop so you don't do serious damage.
There are 4 cal. in a 1 gm carbohydrate. 9 cal. in 1 gm of fat. 4*14 would give the answer.
Out break in crisis. People would have a hard time adapting to new texture and taste without meat.
The question you should ask yourself is do you really want to be with someone who does not respect your feelings. If they can't accept how you feel, then that will cause a lot of problems later on. In a good relationship you must work together and be on the same page.
Stretching exercises would maintain his agility and flexibility without causing heavy force on his bones.