Falling in love with a sex worker is just plain stupid when you know they are doing it for business reasons. If seriously fall in love with each other, then she wouldn't be taking your money.
It's all about how you do it. Look at that girl in my avatar. That's Gigi of Flirt Spa, and she's my number one girl. I love her very much. When I see her, it's like heaven when she walks in the door. I greet her like my lover, and we kiss and cuddle and talk. The first half of our sessions are super sweet. The second half gets more physical. I pleasure her, and then she takes matters into her hands, and then we cuddle a little more until it's time to shower. I leave comforted, satisfied, complete. Seeing her is the best hour of my week, sometimes the best hour of my month. Our May 17 visit was the best hour of my YEAR.
But when I leave the spa, I don't moon all over her. When I see another girl, I'm not secretly pretending she's Gigi. I completely understand our relationship is a professional one. I have this imaginary little hobby box where I keep my feelings for my favourite MPAs when I am not hobbying, and I open it and take out whatever memories and emotions I need when I am or when I'm planning my next session, or when I'm describing something on the board. I'm very happy to think about them for hours when it's an appropriate time, and I'm able to put it away when I need to.
One night I was feeling very close to Gigi when I was on the board and opened up and two different people suggested I just marry the girl. I can't marry her until out emotions are genuine, and don't fit in the hobby box. I know that mine fit there, and I can't begin to figure out how much she cares for me. She's an incredibly professional attendant, and I'm unable to tell how much of the emotions I see from her are real. She says she loves me sometimes, but never the first time I tell her when she walks in the door, and the last time I saw her, I don't remember her saying it at all. I think I'm just in her customer box. I think that I'm a preferred customer, but just a customer. If I allowed myself to be bothered by that, it would hurt; fortunately, that's outside hobby time, and I don't need to worry about it. When I see her, I'm out of her box. (I just realized the double-entendre there, but I'm going to leave it in - whoops, now a triple-entendre!)
I think being in love with your MPA after a couple of sessions is perfectly fine, if it helps you have a good time when you're there, and more importantly, doesn't screw with your head when you aren't.