L’amour's activites

I know that Moo is a psycho and even to Kirin it’s not love but it’s more of an obsession. I remember that Kirin asked him “Did you love her?” When they talked about his sister, and Moo replied something like what is love. But guys, don’t you think Moo had like a special feeling to her? Maybe not in a sexual way like he has with Kirin, but something more platonic? Moo even said that he finally had a real reason to ‘kill’.