What to text a guy i like?

I said Hi. and What you doing and stuff, And after that Dead convo. What can i say to liven up the conversation. I have no questions at all.I want to try and be close to him, And let him see the real me. But how can i be close to him when i dont even know what to text him! Hellpp He thinks i like him LAST TIME, so thats the reason for the awkwardness but he is still my friend. I wanna be Bestfriends with him.