What are leo men like?

I have recently started interacting with a leo man who has been a nice friend for 10 months. He told me that he liked me 4 months back, but I did not feel the same and told him honestly.

He never gave up calling me once a week to ask me how i was doing. I moved to another part of the country 3 months back and it was only a month back that we started talking occasionally. The man seems so good to be true. He is super nice, genuine, caring, and concerned for me. He is always trying to make me happy and everything nice. We understand each other on a super awesome level. I have now started falling for him a little bit. Before I start something, I have few concerns in my mind.

He keeps things to himself and that bothers me. He says he doesn't, but I know he does.
He is a know it all guy. There is nothing on the face of the planet that he doesn't know.
He tells me stories about a lot of his friends, almost all of which are girls. That concerns me the most.

If someone can put some light on what you can analyze from his traits, it would be really helpful.

I would never fall for a guy like him, but he is super sweet and I would take that over any man who is always surrounding me with his anger and dramas(past experience)

Thanks for taking the time to read and respond. God bless you 😄

What do you mean you would never fall for "a man like him"? In your own words he's nice, caring, genuine, smart... so what exactly is wrong?