Even though the male character of this 4Koma gives off a total goth kid feel I imagine he has the mind set of Oji Karasuma [烏丸 大路] from School Rumble [スクールランブル]. Doesn't think he's acting incorrectly during a clearly sexual situation because he himself is pretty much asexual. Poor guy.
Gotta have your priorities. Unfortunately, I'm not so sure that this guy knows what they should be.