thinking about my crush, crushed me and i didnt asked her out

So this goes like that.I know a girl.We didn't interact too much. But i guessed that She was into me.How i guessed? well, when we were going out (she, me and our friends) i noticed that in same day she changed her profile picture on fb.This happened twice.

If i liked a post of her, then she will upload a new pic - looking for appreciation i guess.

I posted a picture with my cat, she posted one too on the same day.It's silly, i know.I was an idiot not to like her pictures but just some posts but i didn't want to look desperate.

Some day I asked a friend of mine, which is her cousin to give me her number.The idiot told her and since then im having a feeling that she stopped liking my posts or anything i was posting because she saw me as a coward..

The problem is that we dont live in the same town (we dont go to same HS anymore).I can see her just when she takes the bus home.I can ask her out then but there s this telephone number stupid problem.Should i try to explain myself?Should i find a convienent lie? Or should i ask her simple without mentioning.What if she asks me?What if she is not single.

I'm too overwhelmed.I can't stop thinking about her and i find myself sighind when i see her online or posting new photos.

The problem gets deeper when i realise that i was always shy with girls and on top of that, the stupidest thing I EVER DONE was to send her an anonymous message (i was drunk) where i confessed my love for her.I later found out that she already knew that i asked her cousin for her number but luckily she didnt know that number.

I want just an answer, good or bad, but i want to do it right.I want to end my suffering even if it means that she rejects me, but i want to do ask her right.

Hope that i wasn't too incoherent, i'm tired and really messed up.
thanks