I think you need to work out a back up plan in case you do need to move...I am not , for one moment, suggesting that secret vaping will end your relationship but I always worry about people who are dependent on others so they are forced to behave as they are told to through fear of, for example, being homeless. I used to attempt to hide my smoking from my husband ... having given up for health reasons I am now acutely aware that I must have smelled like a bonfire a lot of the time so he knew all the way along.....