(๑꒪▿꒪)* No problem!! It’s a very interesting concept to explore!
-Laito would not take that well at all. He’s spent so long avoiding any kind of real feelings, convincing himself that love is simply physical that actual feelings are terrifying. If he loves you, you can hurt him. If he’s attached to you, you can find the parts of him that could tear him apart. When he starts to realize that he’s fallen, he panics, avoiding you in a panicked attempt to prevent any more feelings from forming. He’s scared, genuinely scared of what you can do to him now that you have this kind of power over him.
For all he tries to seem above it all, Laito falls hard and fast when he starts to love someone. If you manage to break through the shell of carefully constructed defenses he’s spent a lifetime cultivating, you’ll get right to the weakest parts of him before he knows how to stop you. A bond makes Laito needy, softer, closer to his vulnerable childhood self, back before he understood how much love can hurt.
Laito will absolutely try to use sex to justify his new “love” for you. As long as he can convince himself that his feelings are merely physical, he’s safe. As long as he can keep things to just sex, he’ll be safe from the vulnerabilities that real love entails. He’ll do anything to keep up his facade, even after it becomes pathetically obvious that he’s fallen hard. When he finally breaks, it’s to an obsessive, needy, desperate kind of love that consumes every part of him. You’re not going to hurt him, you love him, and he can’t get enough.