I need some advice...for realsies

So I was sitting on this man’s motorcycle (in park, not running), we were both straddling it, facing each other. He slung his jacked over my shoulders so that I could lean back against the handlebars comfortably. I put my legs on top of his. At one point he leaned forward and trapped me with his arms all sexy-like.

It was easily the most provocative position I’ve ever been in with a man...and yet, he just doesn’t get my engines running.

I don’t think I will ever (or, at least for a very long time) find anyone who I get along with as easily as this motorcycle-rider. Talking to him, being around him - it’s like breathing. It just comes so naturally. At times, I feel like I’m meant to be with him for the rest of my life.

But here’s the thing (well, two things): I met him a week ago. And we just don’t have any physical chemistry. No spark whatsoever.

I know, I really sound like a 20 year old girl right now. He’s the love of my life! I met him last week! It's a sexless fairy tale!

I’ve actually cut things off twice in the past five days because, holy sh*t, we’ve been moving too fast. Two days ago, I ended things “for real” because I really don’t want to get any more emotionally attached when I just don’t feel a physical spark.

He was breathing heavily over the phone when I broke it to him that I didn’t think we would be successful in the long run. We had this moment of unbearable silence before he whispered, “I guess I can’t change your mind.”

So here’s the question: I could see myself falling in love with this man. Do you think we could build that physical attraction? Or is it something that needs to be there from the start?