Well he was liking ALL her posts at one point and she was at his pool a bikini. Plus training together and taking cute pics. And Stan seems like a player so idk why he'd suddenly start spending his attention on her instead of some other girl unless that was the reason, but who knows.I am in a minority, I see, but I don't find Tsitsipas attractive.
Did it ever start ?
She lives in Switzerland, and from what I've read, they, occasionally, happen to train in the same facilities, so probably they are friends. They make a good couple, but I pretty much doubt it was ever more than that.