yes you have a huge deliema. Perhaps you could talk to your boyfriend about usage.

at the end of my drug life I stopped smoking weed among other drugs, but still lived with ppl that smoked and would offer. it was sometimes difficult but I refused, I lived like this for a month before I departed. I kept away from the influence. This included my own brother.
Its hard to quit something, even if your ready to quit, but its very hard to quit and have the constant influence around its very hard.

I hope that helps a little. Deep inside you know your answer if you are ready to quit your addiction.

I wish you well