A lovely colour spread indeed!
"I had a feeling this ambiguous relationship of ours would simply fade away someday"? My man, if that's how you feel...
Then it's up to you to make sure that doesn't happen! If you love her, then tell her. Rather than visiting just sometimes, go visit her often!
This can sadly go one of 2 ways. Long distance relationship leading to NTR or with this overindulgence in her body it could lead to pregnancy and them sticking it out together.