rat born 72 briefly met girl monkey 1980 is there a future? from Australia

i briefly me a a girl from a dating site she is a monkey born 1980 and i am a rat 1972, we went out for dinners about 6 times and things seem to be very nice and leading to better things. One night during a phone call i asked a very serious question about what she thought and if she wanted something serious. After that she became cold and said she wanted 5 to 7 days to think about things. During that time i called her and received a cold response by her and she said she didnt want me to contact her again . Of course i did send her messages but had no reply , not sure what happened , was it my fault , do you think we will ever be together ? i am very confused about what happened, please give me some thoughts