Aww Honeybunn. I completely relate to this one as well. I too had an event just like this that I posted about a long time ago. Same experience just after I ripped my heart open to him and felt all loved up, I look in the window and there he is all engaged chitter chatter with another girl client. Oh my, the heart ache. Therapy, in a nutshell, just is an emotional shitstorm that we pay for!
I am certain that your t cares for you. I try to remind myself that (A) they have to make a living and they can't do that on one client alone and (B) if it were just one client per every t, ts would not have fullfillment in putting all of their skills into one person. They would become resentful of their one client.
That being said, it doesn't help the emotion mind. It doesn't matter how much logic a person can pour into this. It feels crummy to be so invested in such a weird relationship. I feel for you. Just talk to your t, ok?