Jojo it sounds as if you mean it kindly & I often send V-cards and do silly things for mates on the 14th as well, so it becomes about love, rather than lurve of the Barry White kind. So I understand where you are coming from.
However, in this situ I think it would be kinder/safer not to get this guy a gift as when a person likes someone they will read something into nothing if it helps to believe the feeling is mutual. He will make an analysis, and think the gift is more meaningful than it actually is unless you buy absolutely everyone you know a book.