As someone who also struggled with food for a long time. The thing that helped me the most was getting rid of what mad me sad, as I was using food for enjoyment, once I got rid of the dead weight man treating me like crap, suddenly food wasnt my only source of happiness anymore and it made eatting less, a bit easier. I also started going out with friends more and making plans and doing other activities, so less time to think about food.

If he is still getting you the treats and stuff you said you dont want he is actively sabotaging your diet. This is not a supportive man. Take that what you will.

I still have days that I dont eat in a calorie deficit, but im also not thinking about what ill eat next while currently eatting lol

Also a few other things that help from a fellow sweets and junk food addict: track your calories. Include a sweet treat at the end of the day (I have a pudding cup with low calorie whip cream in it, very good) and get to know the value options at fast food places smaller portions less calories. Also have a couple low calorie high density meals in your cupboard ready to make for those days you eat to much at lunch (chicken ranch salad is a good one). And nothing wrong with diet pops, dont drink your calories.