<human>: Could you distill the essence of the text into 1-3 sentences?

Sooo I need help. Like any advice anyone is willing to give. I've known this girl for awhile now. We met as co workers and it's still that way. Overtime my feelings for her grew to a point where I asked her to hang out, see movies, etc.. Just to get to know her. All went well until I asked her out on a date.

She agreed to it and seemed pretty optimistic about where this would go until after the date. The date even went well too. Later we talked and she said she likes me but not in that way. And that she'd like to see each other more to see if feelings might change. And for now we'll just work on being closer friends.

I know where this is going. And I know where it could end up. I treat her as a friend now and don't really give off the crush vibe I used to. However, aside from that facade I love her more than anything. I've never felt feelings that I feel for her, and I'm at the point where it's making me physically sick. 

I just need help or tips on what I can do to get her feelings to change. She'll be making the next time to hang out, but she's also busy with work/life. Any suggestions on what to do or how to improve my chances would be a miracle for me... Please and thank you.
<bot>: I'm in love with a girl who doesn't like me in that way but wants to hang out to see if things might change. How can I improve my chances/any suggestions?