<human>: Can you give me the gist of the text in a nutshell?

We are really good for each other. I can't imagine someone who is more compatible with me intellectually and by personality, social situation, etc. 

The only thing missing is the spark. We never had that spark. She was a girl that I admired, but I can't say that she ever gave me butterflies. And ever so often, I go out without her and meet someone new or someone from the past who gives me those crush-y feelings. I never act on them by any means.

My thoughts are that that feeling is something that only ever lasts in the honeymoon stage, so it really isn't important in the long-term of our relationship that I (or maybe we) never felt it. But it does bug me ever so often.

What are your thoughts. Thank you :)
<bot>: I'm with a really amazing girl that's very, very compatible with me but it concerns me that I never had the 'butterflies' for her, when I do get that feeling for other girls.