Over reacting?

Kayla
So  before my bf and I had sex he would text me "good morning beautiful" or "hey beautiful" and he used to call me baby ALL the time and I loved it. Now it's just "hey" or "morning"  I asked him why he doesn't say it anymore and all he said was "idk". I don't know what to think or feel. Sometimes it seems like he's not interested anymore. I don't know what to do.