Well Art, ya know the girlfriend will try to avoid bringing this up if possible, but Valentine's Day is for both of you lol.
Of course some of the ladies would be content in the belief that the guy is supposed to be the "sweetheart" by making it all about her.
This is one of those holidays created by intelligent marketers, who know they will absolutely cash in on it, because they know if you don't get her something, you'll be single and miserable.
Don't let the ladies fool you though. It's all a conspiracy...they're supposed to love you too lmao.