Why did you FIRST start going to therapy? You would not have known him when you first started, which means that something else brought you to him. What issue was that? It really might help us understand both of your perspectives a bit more.

He has his boundaries, for whatever reason, and those need to be respected. You are putting him into the situation of having to reject you and he is trying to not do so because it would hurt you. But he is also not willing to enter into a relationship, sexual or otherwise, with you. For whatever reason. Possibly he views it as unethical. Possible he just isn't interested in you. Possibly he might find you interesting but perhaps sexual infatuation is an issue he thinks you need to work on. I have no idea.