You shouldn't secretly add things to your partner's drinks.
Jenna and her boyfriend have a couple days off of work at the same time and decide to have some drinks.
Jenna wants her boyfriend to really let loose.
Jenna convinces her boyfriend to do rounds of shots with her, and they eat afterward.
Jenna pours extra liquor into her boyfriends drink when he isn't looking.
Jenna's boyfriend enjoys their time together and feels fine the next day because the food absorbed some alcohol.
Jenna's boyfriend ends up with a terrible hangover and is bed ridden the next day.