Is the memory of my father dooming my relationship?

Hello Dr Schwartz. Please help me: I have been in a relationship with a man who is kind but has smoked cannabis for twenty years and also drank up to one and a half bottles of whiskey every week, along with several bottles of red wine. I did not know this when we met and by the time I realised a couple of months later it was too late, I had fallen in love. To be fair he has given up the cannabis (a year ago) but can't stop smoking tobacco and he has reduced his alcohol intake although he still has to have some alcohol every day, be it beer or wine. If he has to go without he isn't happy about it but at least he can do that for a day; last year he would pretend to go without but indulged in secret drinking. I appreciate the efforts he has made but my father was an alcoholic (it killed him) and he also smoked cannabis and took other drugs for most of his adult life. I am the exact opposite, never smoke, hardly touch alcohol and am a fitness instructor at a gym. I get upset when my partner has to have alcohol every day. Am I being unreasonable? Is it normal to have a couple of alcoholic drinks every day? I do not know. None of my friends do this. He said he needed the alcohol and cannabis to help him with stress but he works from home and does not have a stressful job. I do understand that people manage stress in different ways but I do not think it is realistic or safe to depend on drugs as a way of coping. He used to have terrible mood swings but has been better of late. I love him but my fear is that he will eventually return to his former habits and I will end up like my mother in a bad relationship controlled by alcohol and drugs. Am I being too hard on him? I just do not know. Thank you. Kind regards, Elizabeth.

Disclaimer

• Dr. Schwartz responds to questions about psychotherapy and mental health problems, from the perspective of his training in clinical psychology.
• Dr. Schwartz intends his responses to provide general educational information to the readership of this website; answers should not be understood to be specific advice intended for any particular individual(s).
• Questions submitted to this column are not guaranteed to receive responses.
• No correspondence takes place.
• No ongoing relationship of any sort (including but not limited to any form of professional relationship) is implied or offered by Dr. Schwartz to people submitting questions.
• Dr. Schwartz, Mental Help Net and CenterSite, LLC make no warranties, express or implied, about the information presented in this column. Dr. Schwartz and Mental Help Net disclaim any and all merchantability or warranty of fitness for a particular purpose or liability in connection with the use or misuse of this service.
• Always consult with your psychotherapist, physician, or psychiatrist first before changing any aspect of your treatment regimen. Do not stop your medication or change the dose of your medication without first consulting with your physician.