my fiancé(25) and i(22) have been together for a year and a half, during that time ive only spent time with his family a few times. a few days ago we were at a bbq at his sisters house with the rest of his siblings and his parents. it was really nice, until his 15yo nephew started making a few inappropriate jokes and slightly hitting on me. i felt uncomfortable, and hoped other people would notice, but no one was paying attention to our conversation. it got to the point where we would stare at me while he made a joke, just waiting for my response. hes a sweet kid, and i do care for him, i care for all my fiancés nieces and nephews. but i just dont know how to deal with this. do i just continue to ignore it and not tell anyone, or do i tell my fiance and his nephew father, or do i sit his nephew down and tell him that its not okay? please just give me some advice