She told me "i dunno if i like you"

I been seeing this girl for a month, everything was good, almost perfect.
but few days ago when we were sharing an 'intimate' moment. I let my emotion go and said "i love you'. the next day she started texting me less and finaly said she was freaked out when i said that. After a while she send a text and it was "i dunno if i like you". I really wana continue what we had and develop futher. so whats the best way in approach this.