Nonetheless, there seem to be pretty standard differences between most men and women. So if your Valentine's Day doesn't turn out to be quite what you expected, give your guy a break. He doesn't know any better. It's not his fault. He's a guy.
Some guys are different.
Some guys remember things like Valentine's Day and make a big deal out of it. No, it probably doesn't mean that he doesn't love you. And no, it probably also doesn't mean that he's not thinking about you as much as he should. It doesn't mean the passion's gone, or the romance. It just means he forgot.