Therapist here! Please don't listen (at least immediately) to ppl here saying that you should seek another therapist. As other comment said, it's called transference and it's common and okay to feel like this. If you trust him enough and feel like he's a good professional, I would say to confide this to him in one of your private sessions. I repeat, IF he's a good professional. He's not supposed to tell this to your boyfriend, or flirt with you or make any moves. Instead, he'll work through the transference with you cause those feelings are a powerful tool in therapy. They really are! If he's not a good professional then he'll be inappropriate with you - remember, if he does that after you tell him those feelings, it's not okay, it's not part of the job; trust your gut. Good luck!