Tobacco addict anyone?

Traci • Two boys 3 & 5. Married on 1/1/16. Had our miscarriage 12/11/15 and we are praying for a sticky baby!
My fiancé is addicted to chewing tobacco. He has promised me twice he was going to quit. He doesn't WANT to and whenever I get upset, he blatantly tells me he will just buy cans when I'm not around. It hurt so bad. 😖
I have done research on how to be of help to get him to quit and everything I am reading says he has to WANT to quit. 
Have any of you experienced this and somehow got him to quit. 
I'm seriously hurt and I plan to talk with him about him saying what he did. I am so lost because getting angry and nagging only makes things worse.