^Which is reminiscent of that one picture where a girl does this to a boy and it's usually tagged with him being too stupid to catch the drift.
Much like Okita probably.
^^^^ I really doubt it when they are still in high school. Its called a sleep over. I'm sure they have lots at each others houses- and given how out they are at school, I'm gonna guess their families know they are dating so they don't have to be sneaky.