I've been in a 2 year LTR and lately she has been acting distant. The first 18 months she'd text me 5-6 times a day and recently its been more like once or sometimes never. The sex is still great and when we are together in person everything is fine but she never reaches out anymore to tell me about her day or just talk like we used too. This is my first LTR so is this normal? Should I be concerned? I know for sure she is not cheating or anything like that and have zero doubts... Just wondering how to respond to this new behavior from her.