I’m pretty sure the main woman at least is Asian (Chinese or Japanese) but can’t be sure where it was set. She’s married and gets contacted by a man she doesn’t know who has seen her in the shower and spots that she may be developing breast cancer because he can see a dimple. He blames her husband for not having sex with her enough and says celibate nuns have higher rates of breast cancer.
A scene I remember is when he gives her a vibrator to put inside her and he’s controlling it by remote while she’s out shopping. It’s not porn, honestly!
I watched it on TV in the early 2000s.