I have no idea what to do

How do I know if she likes me?
Is it the messaging to smoke at odd hours?
Or the staying up late to smoke after work?
Is it that she wears half of my clothes?
Or talks to me about her ex?
Is this the friend zone?
I truly don’t even know.
I haven’t a clue,
But maybe you do.
If she likes me,
Or is she just being super friendly?
I try to flirt,
I really do.
But I doubt it works,
And silently, I think “Phew.”
Should I ask her out?
Or leave us as friends?
I don’t know what to do