Mc recounts his families multiple betrayals like golden child brother screwing his girlfriend in the pool house and as he's walking to confront them gets knocked out by mother with something I can't remember and later ex reveals she was basically paid off/bribed with something she wanted by brother just to mess with him and a couple smaller scale betrayals I can't remember.
But the final betrayal was where he was drugged and am organ taken for transplant against his objections and previous refusal and he shows his female friend the scar when she doesn't believe him while relating his past and why he is cold and hardly trusts anyone.
The end result was he got a massive payout from that last betrayal and parents and brother get locked up or at least the mom did who orchestrated the whole thing.
Ut ends with deciding to try an actual relationship with said female friend.