Two things are really wrong here: firstly, Itt is way too involved in this. I get that he had a real crush with his childhood sweetheart, but in truth he doesn't really know who he is now. They haven't talked and haven't spent a lot of time together. How can he be sure that he really likes him and wants to be with him? They haven't even properly dated for a while or talked enough. Secondly, Rit is doing something dangerous and he knows it. That's why he said he wouldn't dare. There is no way his lies will keep working. Even if Itt is a bit too crazily attached to his "childhood sweetheart", there will come at a point where Rit won't be able to pretend properly.
To make it work, perhaps Rit should try to build something with Itt. He has already lied, but at least, he could try to charm him with who he is. The only problem is that they spend time together, but they don't really talk. You can't really believe that they are learning about each other. Rit likes Itt because he finds him hot, but does he truly knows him? As for Itt, he likes him because he believed the lie that they already know each other. They don't really like each other, they like the image they have of each other. Can you really build any relationship on that?