How do people effectively manage limerence while trying to maintain a platonic friendship?

​I’ve been in a pretty bad cycle of limerence since I met a guy back in April, and I need to stop. We’re long-distance friends, but I’ve become way too intense with what I’m saying.

​To be clear: He isn’t a fan of dating because of his past experiences—he hasn’t explicitly rejected me because we haven’t had that talk, but that’s his stance. The issue is that I’ve fallen hard, and he’s unintentionally feeding into it. We flirt, but I don’t think he realizes I’m actually falling for him. I’m moving to his country next year for school, which makes it impossible to just brush this off or go no-contact.

​He’s asocial, doesn't really know how to interact with people, and this is his first real sentimental friendship. I don’t want to push his buttons or overwhelm him, especially since I know I’d want something real with him past all the limerence. It’s conflicting, and I’ve been getting a bit too "bold" lately.

​I value this friendship too much to jeopardize it, and I know my current intensity isn't fair to either of us. I need to fix my own head.

​How do I actually dial back the intensity? How do I stop the constant overthinking and get back to being a normal friend without acting on these feelings or making things weird? I really just need practical ways to ground myself and stop the cycle of fantasy. Any advice would be appreciated.