Morning, stranger

I don't know who you are but you always pass me by
And each  time our paths meet you always make me smile
I feel like such a school girl who's got the butterflies, going all  shy
If only I could master up the courage to actually say hi.
But since simply looking at you leaves me so tongue tied 
I'll just  keep enjoying the moments when you pass me by
Because you're that familiar yet mysterious stranger
Who unintentionally, always makes me smile.