Isn't he too young?

For the second time this school year, Tom came home from kindergarten today telling me he wanted to give something special to a girl in his class. I would think nothing of it if he did the same to the boys too, but so far only girls have been the recipients. When asked why he wanted to give them something, he replies with a big grin,"because I LIKE them." The first time I didn't think anything of it until I saw the resulting picture full of hearts...Isn't he too young for this?