married man unable to have intercourse due to illness,should i allow my wife to have it with someone

hi, im a married man of 7 years to my very good wife,but since getting diabities ect im totaly renderd from having sex,even though ive had several treatments,my wife says she understands,but i mentiond about the chance of her meeting a married man for fun and i said i wouldnt stand in her way,its not fair she has to go with out sex? and i feel its the only way i would be happy.is for her to have descreet meets for fun,

i dont think ive been wrong in saying all this as its getting me down unable to have fun,but i wouldnt mind her having fun.