When my former T first mentioned that therapy was winding down for me, I started to cry and then told him that I'd miss him. Without hesitation, he replied that he'd miss me too.

I think it's a little more complicated than therapists putting their feelings aside. A T wouldn't want to deny their feelings, I wouldn't think, but they would want to be very aware of them. Self-awareness is very important and can help the T keep therapy about the client. They may even learn more about ways to help a client by recognizing what feelings a client elicits. Part of what makes the relationship so healing is that it is genuine and real.