Replaceable?..

Watching you from afar,
Laughing with your new friends,
Smiling with your new friends.
You can't see me watching you,
Too much involved, too busy to see,
My stomach so sick, my throat so dry,
I can barely speak, all I want to do is cry.
We've been growing apart, day after day and week after week.
Its come to the point I can't take it no more,
When its so obvious, with them you'd rather be.
Complete strangers, thats what we are,
I like to take my work seriously,
Work hard and get it done,
You, you seem to be more relaxed and laid back,
But thats just not me.
If you're not with them, then your with your boyfriend,
Earlier this week when I had an argument, you weren't there to turn to.
Replaceable, thats what it feels to me,
Was I just a temporary thing?

*Best friends can become complete strangers*