ISTJ wished me a happy Valentine’s Day

My ISTJ ex FWB wished me a Happy Valentine’s Day. I’m confused with why and I’m currently over analysing his action.

I personally (ISFP) don’t wish people happy Valentine’s Day unless it’s someone I’m dating as I guess I just don’t think it’s appropriate. I told him I liked him before we went our separate ways as well.

I guess I was waiting around for him to ask me out and because he didn’t I feel disappointed and for him to wish me happy Valentine’s Day on top feels like a slap 😂

Is this something you ISTJ’s do?