A cute way to ask my boyfriend to MORP when he lives out of the state?

My boyfriend and I have been going out for almost 10 months. He is a freshman in college and I am a senior in high school. I want a cute way to ask him to my MORP (prom spelled backwards...casual). He lives in Chicago for school and will be here for his spring break when my MORP is. He already agreed to go but I still want to ask him in a cute way. Well as cute as possible considering it will have to be sent to him! Please helpp!