question??

My SO is a diabetic and also a smoker and a drinker and does not take his meds or control his diabetes. Not a good combination. It is causing major issues in the bedroom if you know what I mean. I feel horrible but I am so frustrated. It would be different if he took care of himself but it's like he does not even care and makes me feel bad because I get frustrated with him. One month ago I started my path to lose weight and get healthier as I am chubby. I just feel like he is not even trying and I am at my wits end. Am I a total insensitive asshole or justified?😞😞 Thanks for reading and letting me vent. 😕