Is this girl starting to lose interest in me?

There is this girl that i like and i think she likes me back. We have been texting each other for the past 7-8 months and developed a strong relationship. We have many things in common and we both treated each other like were dating even though we weren't. She has never had a boyfriend or any other strong relationship like ours. Just this past week i was talking to her and asked if she wanted to hang out with me and she said, "Yeah sure i wouldn't mind hanging out with you." I said okay cool. I asked her where she likes to go when she goes out (to get an idea of where to take her) and she said "Anywheres nice." Then i texted her yesterday morning and i got no reply, then i texted her around 10 that night and i got a reply. Is she starting to lose interest in me?!