Why can’t I be casual with this guy?

I started seeing this really nice guy sometime in March and instantly connected with him. We are like minded about a lot of fundamentals, come from very different social and professional backgrounds but are still able to talk about our differing opinions and perspectives and enjoy these conversations, are able to joke and flirt in equal proportions. He’s nice tall kind cute, great in bed and knows how to have fun. He’s talked to me about deep stuff – about his past relationship history, shit with family and other personal stuff and i have been fairly conservative about what all I’ve told him because I have this tendency of not opening up about personal stuff.

I’m obviously starting to like him but can’t see myself dating anyone atm (what is a relationship even). He has also reiterated on multiple occasions that he is not looking to date because he needs to focus on two of his growing businesses. I was having a lot of fun initially when we were talking a lot, hanging out frequently, kissing and being cute but we both went through a weird shift in that dynamic and now things are no longer the same. We still talk, he still hits me up to check in with me but i find myself holding back from reaching out to him because I constantly think he’s too busy or i might be reaching out at a bad time, or i fear sounding very pushy/needy. I’m not sure why i even like him so much to be putting this out there and overthinking so much, isn’t this just a silly crush? Why am I missing him but not reaching out but also not matching with any other reasonably decent seeming guy on hinge?

Vv confused about my own feelings, not sure in which direction i should take this forward. Should I tell him about how I’m feeling? This would mean gathering a lot of courage and putting myself out there to someone with whom I may not even have anything tangible. Is this worth anything at all?