Yippee, ill leave the steps to get every ending:
cookies and milk: Just be nice
peachy: start with the "are you going to give me your milk" option and the seduce him with the options; You're hot criminal, I wanna see shoe marks, (I dont remember this one but just try to be polite with the flirting) and I will have to see you in my dreams.
rotten milk: just pick the pink options
the bloody milk: be really rude and press about his wife