How do you ask a teenage guy out?

Ask him out on a high note if your shy with being direct. Let's say your talking and having a good time and you something like" I actually have to go but let's meet at that restaurant on let's say Tuesday" we guys are stupid and if we are free we instantly say "yes" if your comfortable being direct and just saying "hey do you want to go out sometime" which he may appreciate since boys usually ask the girls out.