Help Me.

So I’m a 23 year old lesbian. I’ve recently started liking this girl . I told her how I felt about her but she told me feelings aren’t the same. I feel as if she lying . Reasons being ... she always flirt with me , touching me , holding eye contact for longer then normal. Every joke I tell she laughs at it even if it’s corny. She always sit next to me on the couch even if the other sofa is empty. She giving me all of these signs showing she’s into me but still is denying it. What should I do ?