The good part: This entire scenario is incredibly sick (yes, hahaha, YES). Fucking your best friend's mom? Fucking your daughter's best friend? Oh boy, this could be a riot.

The bad part: It's a very very slow burn. You'd expect a buildup, then drama when the daughter/friend finds out, then reconciliation. Instead, it's 300 pages of sex, secret dates and a good old relationship escalator (of course, marriage is just what this story needs 🥴). At some point it really got boring. If you really wanted this story, make it shorter. And scrap the epilogue.