i smoke and my boyfriend is mad

i have another problem thats wearing on my mind. I gave up smoking for my man because he really hates it and find myself smoking behind his back. I hate lies of any sort and feel like a big con artist. Don't tell me i have to give it up for myself. That is not the issue. How can i be honest with my man. If i have told him i smoked he gets really mad and i feel terrible. I do want to give up but dont. It is the only thing that keeps me calm when i get uptight. Ive smoked for years and stopped for months when my man was home. Now i started again. Please help. Tweet