As others have stated, a QPR is basically whatever you want it to be tbqh. But that's not super helpful so I'll describe the QPR I'm in and have been in for some time
Basically I had been dating my partner for a while romantically before I realized I was aro and came out to him. He is one of the most important and intimate relationships of my life so we decided to stay together, just shift out of a romantic version of things.
We talk everyday, go on dates, are there for each other emotionally, are tactile as in hugs and cuddling (tho not kissing since I dont like it lol), we have sex because we're both sexual people as well.
But there's no expectation that I have to be "romantic" with him. We don't do valentines day, and don't plan to move in together or get married or anything like that.
Often it feels like we're just making the rules up as we go along and that's the whole appeal for me!