I'm not really sure how I feel about this one. Maybe I can say this: objectively I'd say it's very good, and subjectively I never should have read it, it's not for me.

I picked it up because many mutuals seemed to have loved it. And I can see why! It's fast paced, very hot, a page-turner, not many bad things to say about it at all...
Except the fact that I just felt a little weird about the relationship. The quite large age gap, one of them being 21 and the other's daughter's best friend!! That just doesn't quite fit right with me and although everyone was consenting and the daughter/best friend seemed fine with it eventually, I still just couldn't help but feel like this was full of issues that were almost never raised...
Also, this book is like 90% sex or thinking about sex or sexting. I don't mind sex in books at all but it felt like there really was almost only that. They fell in love with their sex. Or maybe more but we almost only really got to experience their very detailed very hot and spicy sex life.
So yay if that's what you like, you'll very much enjoy this book.
It's just not really what I like to read most.