Falling in love with girl who hate me

I once send old photos of a young girl playing piano in a concert in 2005 through Instagram chat to someone, and I found out that she liked the photo very much because it was her when she was young. She is older a year than me, but for me she just same as me. She has beautiful smile and I suddenly have crush on her. But along the way she a bit irritated because I stalk her social media all the time. This time I have to stop pursuing her.