I'm 26.
I see a 27-year-old therapist 3 times a week just to talk.
I'm not crazy or anything, but I see her because I really like her.
She's real cute, and we get along well.

She doesn't seem the least bit interested in a relationship with me.
She might be a little attracted to me, but I'm not so sure.

I'm not sure she really knows how I feel about her because I only mentioned to her once that she was attractive and that I feel close to her.

Another problem is the "ethics". It's an ethical standard in the mental health field that therapists and patients may not get involved.

She always tells me I'm doing good because I never miss an appointment. Even though I drive 30 min to see her. But of course I never miss an appointment. I like being with her.

I know she's going to mention it next time, so I planned out what I'm going to say.
I've been rehearsing it:

"Driving down here to see you is really nothing.
I would travel a million miles to be with you.
You’re so sweet and wonderful.
I would kiss you if I wasn’t afraid that somebody might walk in at any moment and catch us.
I’d never do anything to put your career in jeopardy.
But if I knew we were safe, and nobody was looking, I would definitely kiss you.
And the fact that it’s "unethical" would make it all the more enjoyable.
You really mean so much to me, xxxxxx."

I hope I'm not coming on too strong. I just want to show her that I really like her without making her feel uncomfortable.