What are some dead giveaways that a girl likes you?

There is a girl that I like and I think she likes me but I ain't got the guts to ask her out yet. basically I'm asking if there is any way to tell that she must like me?

also wondering if these are good signs:

She initiates contact on text, she says we should hang out, she just today asked me if there is anyone I like, she uses a lot of lol's and :) 's in her texts, she says she enjoys talking to me

I realize this is kinda pathetic but thanks for the help.
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+1 y
and please take this seriously. I'm lost right now mentally.
What are some dead giveaways that a girl likes you?
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