The main thing for girls is to feel that they are valued, to hear the words that are pleasant to their heart and not to rush. She will still say Yes, only it will be her choice. So the stranger acted completely professionally - for that he got the award. And she's a great nipple.
The guy is lucky with his sister - she is a nipple. She's ready to open her mouth for him to stick it in her. Apparently she serves him regularly, because he no longer feels affection for her, but fucks her like a street whore - rough and bold. However, she seems to like this treatment.