This is just so dumb, haruto got a freakin girlfriend but why would you go out with the little sister of your ex who has a habit of luring him into traps
He can say whatever he wants on how he loves Asuka, but the fact is that this would have been one and done if Haruto didnt say anything and let Eba be on her way.
But he couldnt. He cant let her go.
Rin was 100% right and simply exposing Haruto for how he truly feels.