If your interactions with H about money are getting so silly you're losing your head then it's time to sit down and sort out an allowance. No asking, no begging. Cash given to you weekly. End of!
As for cooking for him....he's not part of your family now.....he chose that.....no more cooking, no more asking, get on with your life.
If him living in his cave/den isn't working for you/s then consider discussing that too.
M32 H37 DD1 6 DD2 5 M6 T10 EA 31.08.13 Separated and H moved out 19.09.13 ILYBINILWY 23.09.13 OW 11.13