Sunny, you've already gotten a lot of great responses, and I like your decision to discuss this with your T. I do think we should expect our T's not to lie to us. As others have said, the therapeutic relationship is based first and foremost on honesty - and I think that goes for both the therapist and the client.

I had a situation come up where I thought my T might have lied to me. I had asked T if she was working on one day because I wanted to schedule an extra session if she was - T told me no, she wouldn't be working that day. T's office is in my neighborhood, so I happened to walk by her office on that day, and I saw that her light was on! I was very hurt and upset, but then I reasoned that maybe she had just left the light on, or maybe she had an emergency. I wasn't even sure if I was going to bring it up in our next session, until T told me that it would be good for me to be more unreasonable sometimes in therapy - so I told T about seeing her light on. T said of course I would be hurt if I thought she had lied to me. It turned out that it was her husband working in the office (he's also a T and shares that office with my T). But it definitely felt good to bring it up and hash it out with T, and it opened a door for me to bring more issues to the table and not let them fester.

Good luck, Sunny!