How do you know when you feel in love?

You experience every emotion....
Exciting and scary
Stable and Crazy
Wonderful and vulnerable.
Its every emotion!

i have my @ss kicked out of work

All I can really say is I know when I do and I know when I am not.

It isn't someting youknow
It's something you feel

When you feel butterflies in your stomach when you two are kissing

Yes.. indeedy, handsome fella, but then how do you know that what you feel is love? I suppose that's the question?
There's infatuation, falling in love, adoration, lust, idolization etc .. and love as in real love.. Many of these can feel very similar ... And there's love and love, it's not just one tier..

This...

Led Zeppelin
Houses Of The Holy
The Rain Song
This is the springtime of my loving-
the second season I am to know
You are the sunlight in my growing-
so little warmth I've felt before.
It isn't hard to feel me glowing-
I watched the fire that grew so low.
It is the summer of my smiles-
flee from me Keepers of the Gloom.
Speak to me only with your eyes
it is to you I give this tune.
Ain't so hard to recognize-
These things are clear to all from
time to time. Ooooh...
Talk Talk-
I've felt the coldness of my winter
I never thought it would ever go
I cursed the gloom that set upon us...
But I know that I love you so
but I know that I love you so.
These are the seasons of emotion
And like the winds they rise and fall
This is the wonder of devotion-
I see the torch we all must hold.
This is the mystery of the quotient-
Upon us all a little rain
must fall, Just a little rain?
ooooh, yeah yeah yeah!