<human>: Can you condense the text into a few key points?

My best friend (27/F) and I dated for a few months before I broke things off. Everything seemed perfect - we got along great, had incredible sex, etc. That being said, I never felt the "butterflies" or "spark" that I had with other girls -- I never felt truly attracted to her. With other girls (specifically a few of my long term 1+ year relationships), when I rang their doorbell and saw them walking to let me in, I felt something special seeing them for the first time that day. It was a rush. With my best friend, I felt nothing.

This fact manifested itself in various ways. I'm an extremely affectionate person, but with her, I was not at all. Holding hands made me uncomfortable. Sexually I'm generally a giver, but with her I mostly took. I just didn't feel like I had the same sexual drive as I had with other girls. Not to say we didn't have a good sex life, it was probably the best (on paper) of any relationship I've had. But where with other girls I couldn't keep my hands off them, with her I was mostly uninterested until I got really horny.

However, our interpersonal relationship is by far the best I've ever had. She is my closest friend. Even after our breakup we have remained extremely close. 

So my question is this  --  With this girl it seems like our friendship essentially eliminated the honeymoon period. Should I get over this and try to explore the relationship? She is completely in love with me, but I feel like I'm not prepared for this at this point in my life. I guess I'm looking for advice from people who have either gone with the person that give them butterflies, vs. the people who have decided to date their best friend.
<bot>: is dating your best friend a good idea if the physical attraction isn't quite there? She is far from ugly, but just doesn't quite do it for me.