We've been friends since we were in high school.  When we met we both had SOs, so the relationship started with friendly intentions. Quickly ended up spending more time together than we did with those old SOs.  
I've never felt this way about any of my other female friends, and don't know how/if I should make a move/bring up the topic of becoming more than just friends.  I've been with a lot of women, but there is something about her (I can't put it into words) that no one else possesses. 

One friend told me to, "go to dinner, be a little flirty, invite her back have some drinks and see what happens."  I don't think this is the path I want to take...is it?

It is more than a physical/sexual attraction.  I know this girl better than I know myself.  Everything about her attracts me, her goals, wishes, humor, mannerisms, and to make matters worse she's more beautiful and intelligent than you can ever imagine.  

Recently there have been a few incidents, where with any other human I would have assumed she was flirting, but we've been friends for so long. 

Does anyone a have similar experience? How did it work out for you/what advice can you give me?

Feel free to ask any questions that help you help me.

PS-  Sorry for the entirety of this message.  It's hard to finally write this out.
user
I might have fallen in love with my best friend
assistant
We've been friends since we were in high school.  When we met we both had SOs, so the relationship started with friendly intentions. Quickly ended up spending more time together than we did with those old SOs.  
I've never felt this way about any of my other female friends, and don't know how/if I should make a move/bring up the topic of becoming more than just friends.  I've been with a lot of women, but there is something about her (I can't put it into words) that no one else possesses. 

One friend told me to, "go to dinner, be a little flirty, invite her back have some drinks and see what happens."  I don't think this is the path I want to take...is it?

It is more than a physical/sexual attraction.  I know this girl better than I know myself.  Everything about her attracts me, her goals, wishes, humor, mannerisms, and to make matters worse she's more beautiful and intelligent than you can ever imagine.  

Recently there have been a few incidents, where with any other human I would have assumed she was flirting, but we've been friends for so long. 

Does anyone a have similar experience? How did it work out for you/what advice can you give me?

Feel free to ask any questions that help you help me.

PS-  Sorry for the entirety of this message.  It's hard to finally write this out.
user
I'm falling for my best friend. What do I do?
assistant