How do I get over a fling?

I met a man online for a casual fling. From the moment he e-mailed me for the 1st time, I noticed something very unique and alluring about him. He stood out from everyone else. Now, with this being the best of all time, I am helplessly infatuated with him. If he wanted to share every minute with me, I would hurriedly comply. It seems like he could be everything that I would ever need. I don’t even know this man, but I am so drawn to him. I’m enjoying being with him so much. I smile every time he calls me. The tone of his voice is so alluring, his eyes are captivating and his touch is sensuous. When he looks at me, I feel desired. He’s so pionate when he makes love to me. He stares into my eyes when he‘s inside me, and he is right there with me concentrating on my every movement, every word I say, every breath I take. So this is what perfect is like. I could do this every night for the rest of my life. I guess that's why I'm confusing with emotions. It couldn't possibly be an emotional connection; I know better than that. But I think the fact that he makes me feel so good physically, causes me to be unable to fathom a world without this pleasure. I ume that things will come to grips soon enough, but I feel like I should start to distance myself because I'm already getting caught up very early on. He is just too perfect in every way...cute as hell (just plain adorable), y, funny, intelligent, goal oriented, successful, freaky, fun, exciting,....i could go on and on....charming, deep, pionate, aggressive, reserved, masculine, understanding, pleasing, witty, adventurous, articulate, attentive, youthful, secure and wise beyond his years. I have to get the ball rolling in a different direction. I have to stick to the agreement of things being strictly physical. But how? How is that possible when it may have been your intention in the beginning, but after meeting a man of such quality, confusion sets in?