I'm not a fan of it lol. It's too uncalibrated. This is basically the equivalent of going up to girls saying they have nice tits and you wanna fuck them. Sure it can work if you run enough volume, but it is very suboptimal and is going to miss a lot of girls who might be looking for fwbs, but just don't like your approach

And yes, your follow up was where you lost her. Way too logical and non emotionally appealing. A much better response would have been something like "I'm open to all that, but I think good sexual chemistry is a must for any successful relationship"

Another part that I didn't like is when you said "Want to be fwbs or not?" Very demanding lol. The fact that she started asking you logistical questions after you sent her that message means she was open to the idea of being fwbs. I would have just gone for a wine close and assumed compliance

I’ve done stuff like that before as well. Yes you will get a few girls who are down, but overall it’s not a good approach. You’re not differentiating yourself from your competition at all. So girls with a lot of options are most likely not going to be down to meet you with that approach.

I think she's serious and you've triggered a typical anti-slut defence. There's probably a snappy one-liner to reframe and keep moving. But if you want to do that wall of text I would cut it into pieces, change her mood not her mind, and get her to engage with every piece.

"I'll get to know you better than any man ever has". She should be at least a little curious about that idea and engage.

"My ex said she never really knew someone until she slept with them". Which is a true story for me, it social proofs the idea, I agree with it, you agree with it, this woman might too.

"Have you ever had an orgasm so intense that you felt it in your soul?" Something to frame great sex with you as an intimate spiritual experience.

"For me fwb is the most amazing kind of friends, you down?" Bring it home.

You need to pace the shit out of this, if you get more than one pace ahead of her you'll sound like a kooky nutjob. And check your language, "a close and intimate physical contact" sounds like a trip to the gynaecologist which will not be most girls' idea of a great first date. Personally I save my bizarre gyno roleplays for date 3.