This is the correct answer here. Either or both of you need to initiate bs.Don't ask, just start with some pussy slide. The ones that do and like bbfs will normal proceed to push your dick in, or will ask you too. But, if you ask, you will either be told to pay extra or even worse get blacklisted. Go with the flow and see how far you can mess around. No PS means usually no bareback.
It’s got to happen organically. Go with the flow and give them a reason to want you to come back for more. Be respectful, good Hygenie, have some charisma, turn her on, separate yourself from the rest etc. I’ve never asked and have never tipped/paid extra.
From my experience:
Asians - slide it in gradually
Caucasian - tell you directly or they grab your cock and put you in.
If an SP has it on their menu I won’t see them. I don’t pursue it specifically if it happens it happens, if not no big deal.