Is there such a thing as texting etiquette?

Anonymous
So I have been talking to this guy for a few weeks now. I met him online. We haven't officially met yet, but we text a lot. I often text him in the morning with a "good morning handsome :)" Sometimes he texts back, sometimes he doesn't. Usually I'm not wanting to start a conversation at that time so I don't text back.

If I text him other times and he doesn't text back right away, I'll forget about it and he would text me later. (He's obviously busy). I also make sure to not text him if we are in the middle of a conversation and he doesn't text back.

I also give him plenty of space to quit texting if he wants to. For instance, we were texting yesterday for about an hour. The conversation seemed like it was dying down so I told him to text me whenever he wants to, but he just replied "what are you doing right now" so he kept the conversation going.

Here is the problem: I really want to text him right now, but he stopped texting about an hour ago because he texted Lol and I ended it there.

Should I say F it and text him? Is there a certain amount of time that people are comfortable texting for? Do you guys see what I am asking?
Updates
+1 y
Also, I asked the same guy if he had a Facebook, he said yes, so I told him to add me. Right away I told him not to. He just replied "lol ok". I just think it's to soon to add him, I don't know where our friendship will go so I don't want him on my page, just in case I have to delete him. Do you think I could have messed something up? Should I add him?
Is there such a thing as texting etiquette?
3 Opinion