Morphine Sulfate SR and bubbly

My male friend has been taking 1 small bottle of morphine drops that are suppose to last 3-months in addition to 75 mg patches 2 q3-4 days per wk. Just upped dossaged from 1 year ago from 50 mg patches,fenelyne, to 75mgs. Chronic pain is from arthtiyis in hips & bone broken in accident as a child and numerous times since, has adult onset diabetes,takes Insulin. Just has 3 stynts placed in his heart and suffered from major stroke about 6 months ago. Has severe neuropathy in legs, On disability and only 52 yrs old. Former pow Nam vet for short time. Have been close friends for quite awhile. His mood started changing when he started taking the morphine over 1 yr ago now and he is now severely depressed, combative and hatefull especially after his meds has been raised to higher mgs and wife now objects after 6 yrs to our relationship. Was very bubbly & fun before wife starting to objecting to just having fun & joking around. More than you need to know, but he has now became physically abusive to me by slugging me in the shoulder then denying he did it. This has happened about 3 occasions in the past 4 months since his stroke but usually just with heel of his hand and never on my face. He has never been like this to me proir to the stroke and I have spent many many days, and years with him. He's on meds for migraines, heart, blood pressure, Insulin, this is just a drop in the bucket. Try 30 rx's. no sex drive and says he's angry at the world. Is adding all this morphine to his other meds making him into a morphine monster? Act's worse at home, but I don't think he's hit his wife, she's bigger than he is. I only weigh 103lbs. Yells constantally about inappropriate subjects or time or& has no feeling or remorse except care for his child of 8 yrs. She get's yelled at as well. He has to take insulin daily. Only sleeps about 2-3 hrs at a time per nite. Recently went on meds for restleg syndrome which I'm the only person ,and he's been married 5 times that figgured this out. We are very emotionally attached to each other but I'm beginning to doubt his for me. Sx's keep getting worse, won't hardly talk about anything now. Is this normal or is he like I suspect, has become addicted to morphine? Thank You anyon that can possibly help