I also feel burning fire (which often makes me smile) and a lot of times also nerves rushing through my body (tinglings..;d) when I am around someone... and I also used to wonder "what is this, might this be a crush?" Lol... interesting to think back of this phenomenon...
I still feel this change in my body around someone I really like but now I think it's more conscious b/c I realize that it's because of a possible crush.
The burning is just awesomely ... (can't describe it further than awesome but this is lacking !
).
I sometimes imagine the other person feels it too.
Yes, I am sure that when I actually feel this kind of thing, it means a crush is growing. This doesn't just happen with 'anyone'.
ISFP's should write a book about these kind of things. -Love & people & .. is such a mystery.- We're great with our Fi + Se...