You're 100% on the wrong site. If you want a relationship, try another site. The only reason these girls talk to any of us is because we pay them for pleasure. That's it. They aren't your friend and they don't wanna date you. Anything more than that is completely in your own head and it's because they see you as an easy mark. Tell them you're broke and you won't hear from them again, 100%.
Now, that said, you can completely be on friendly terms with the girls. I have plenty of girls that I'm friendly with, but always remember its a cash for pleasure business. Nothing more. We've had a few chumps who "fell in love" with the ladies over the years. Always ends poorly for the guys.