Has anybody here fallen in love with somebody who is older to them

hey people, have any of you guys fallen in love with somebody who is elder to you. I had a crush on this girl and now it has grown as love. She is 28 and I am 22.

I have not told her about this but I asked her out and she agreed to it after sometime. Now when I ask her about going out she never responds.

Any suggestion, what should I do now, should I continue or forget about it, before I get crazy about her.