Stage 5 Clinger

Today I must address one of the biggest turn-offs: smothering. I'm talking about guys who cannot seem to handle normal correspondence online without...killing it. Example:

We have a good exchange. I go to sleep. I wake up. I go to work. I go home, and check my inbox...and discover this:

Things have quickly escalated in this man's mind, so fast that I probably don't want to know. I went to sleep with a migraine, but he is now checking in with me all of the following day. To be nice and to give myself a little space, I tell home to back off. Kindly.

He didn't really get the hint, instead deciding it would be a great idea to email me in the middle of the night and then the next morning. Thank god I didn't give him my number. 

By now I have determined this guy is socially inept. I cannot continue to entertain him at all, or encourage him in any way. Perhaps I should've immediately said, "sorry, it's not going to work out..." But for some reason I was busy and let it go a few extra days, leading to the end of his dillusional "relationship" with me. Really. Kind of unsettling. He says he just wants to have a drink, but my goodness if I don't feel like I wouldn't end up locked in a closet somewhere.

Is this what normal guys do when they like someone? Because this seems awfully persistent and clingy. It kind of makes me feel sick. I had to make sure it stopped. Maybe it's wrong to be so blunt, but I feel like it's equally important for him to know that he made me uncomfortable.