@Ey_man glad you understood lol
Anyways, she asks to server under him, not to serve him, the difference is that one implies subordination while the other implies servitude. Also on a different note, being someone's master doesn't always have to be slavery either. It could be a master/disciple...
This one's unique
And @SveNo from what I gather she's just into weird things because of the previous relationships, although how she managed to date what seems to be 2+ people for at least long enough to have sex in a good few places... she had to have been pretty young when she lost her virginity