Hey mate,
Did you tell them it was purely sexual right from the start? That helps a lot

.
I am more of direct kind of guy. So i tell girls/women what it is i want and what i dont want. they either accept and fuck or they dont. No surprises when something ends, no scenes nor exaggerated drama.
Just a warning though: some people just hear what they want to hear. I have had one very bad experience. I had told her that i wasnt looking for an LTR. And so when i met somebody who i fell for, she actively sabotaged the relationship. SHe told me she thought i just wouldnt admit the fact that i was actually in love with her.
Therefor, when i go out to meet people, there is one of two things i never do.
1) Or i never fuck without getting to know the girl better. I need to know if she is sexy, if she has an idea of good sex, if she is patient and also in the meanwhile figuring out if she has low self esteem or not. If she has low self esteem, she can screw herself....
2) Or when i do intend on fucking like the same night, i never say truthfully who i am, where i work or give her anything that makes her able to contact me again.
Sounds drastic, but the shit i have been through makes a man cautious enough.
I hope it helped in some way
cheers!