LW1  While I am definitely not a fan of 'bring home the boyfriend' moms, he is there and he is around your children ergo his health should be of great concern. First, how _is_ he behaving? If it's normal, or reasonably so then it shouldn't be a problem bringing up the meds you found which, BTW, should be gotten rid of not simply put on a high shelf. They are expired. If you can't say his behavior is good skip asking about the meds and get him out of the house.