PKPD-289 - Half-Japanese, half-foreign, a bit of a girlfriend, A of Shimidoria

I don't need a girlfriend, but I want loving sex. I want affectionate dates, but I don't want to be controlled. It's difficult to find such a convenient relationship. A and I contact each other every day via LINE and check if the other is cheating. But neither of us has suggested dating, and in fact, A is also getting involved with other women. But I like A so much that I don't want them to cheat, and when we meet, we have loving sex. Is this a friends-with-benefits situation? A girlfriend?