I'm confused

You say you're in love, but you don't want to date; your description of what you do want sounds exactly like 'friendship'. Which you've already got.

Either I'm not clear on what you want, or you aren't, but I can't see the point of telling him anything if you like things as they are, because telling him will change things. It always does.

You might have no interesting in dating him (or anyone else), but he clearly does have an interest in dating. And I have to wonder why you are jealous of him dating, when you say you don't want to date him.

Maybe you do want to date him, but you are fooling yourself?

I'm confused too. But from what you've said, you have a great friendship, and you don't want more. You already have exactly what you say you want. So don't pass your confusion to him, it will destroy things.

I do get - loud and clear - that you like things as they are, and fear change. But that isn't how the world works. Relationships do change over time, because people change over time. You can't stop that, any more than you can stop time on a sunny day to stop in incoming storm. Things happen. None of us can control the future, especially not by trying to control the present. Do what everyone else does on a sunny day - enjoy it. Don't waste a sunny day by running around all day preparing for rain.