Relationship started about 4 months ago, we were friends for 3 years, before she told me she liked me...we have never had an argument, had sex only one time, but we have alot of emotions for each other...

Recently she text lesser & lesser, she dosent respond to my text, conversations arent the same, & now we dont talk at all, this all happened after she asked me if i could handle a long distance relationship, im confused because thats what i have been doing for the past 4 months.

WHAT SHOULD I DO? HOW CAN I MAKE THINGS INTRESTING AGAIN?