How can I tell if she likes me or not?

I have this girl in my neighborhood who talks to me lots of time and even invite me to her home. And she has been talking about her private issues to me straight.

She talks about all her previous relationships with me, she also mentioned that she only talks deeply about herself to people she trusts only (this makes me thinks she likes me but I don't know for sure)

Currently, she is single (she knows I am too and talk about it everyday)

Despite all these, I am not sure if she likes me or not. Also, I am too scared to ask her, don't want to ruin the good friendship.

Your advice means a lot to me, so please and thank you.
How can I tell if she likes me or not?
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