Younger MMC obsessed with older FMC (reverse age gap)

Hi! Im looking for a book in which the MMC is younger than the FMC and completely obsessed with her for years.

Preferably mmc should be in his early twenties while fmc is late 20s/early thirties.

But I wouldn’t mind if they are older than that.

Open to HR,CR and dark romance is more than welcome. I don’t mind dub/non con, I just want the MMC to be obsessed and really possessive and no cheating

Books that I have read that inspired this post are

{Twisted Obsession by S. Massery}

{Burn for me by Sara Cate}

{Love Hacked by Penny Reid}