Smoking is extremely unattractive because it heavily stinks like shit.

Additionally, what you describe, is your lack of dopamine. You have build up your normal dopamine level way too high. Meaning that, to feel normal or satisfied, you need to smoke cigarrettes or do heroin.

A normal person who isn't addicted could look at cat pictures or look at a beatiful park and be happy for that day because his normal dopamine level is way lower. (If he isn't depressed or not addicted to tiktok, etc)

You either understand the serious health downsides and want to quit, or you will never be able to quit because you feel like you are right with cigarretes, then a different girlfriend who smokes too would be more appropriate.