I had to answer your question strictly because you made me look up a word I'd never heard before. So thank you for teaching me the term "demisexual".
Moving on, becoming emotionally invested in a man doesn't necessary drive him away. In fact, there are a lot more men out there who'd rather date and sleep with somebody they gave a crap about rather than some random trollop. It's just about spending time with somebody. And if a guy likes you, he's more than happy to spend as much time with you as possible. That's why you see men going apesh*t when they find a woman they're interested in. They try to find any kind of way to get next to her. It's true.
So if you're interested in dating guys and sleeping with them (at least trying) it sounds like you've got to go out and meet guys and see what transpires. You never know what could happen and you might meet some decent guys. Of course, where you meet them makes a difference. I can't tell you where to meet them necessarily, but I can surely tell you where not to go, like a strip club.
Finding a guy to be emotionally invested in you might not be as difficult as you think. It might be more difficult the other way around. But just be open to the possibility.
Very good article, really interesting. Thank you.