I've had 2 T's. In one experience it was great. They talked a lot to each other, and were clear on what T works on what issues, and they never really got in each other's way. In another experience, my most recent one (See thread: On Friday, I'm Throwing Up, for details LOL), it's caused a huge rupture and blow. There's that saying "Too many cooks in the kitchen", and it's true.

Therapy has many different approaches. To have 2 therapists, means you can kind of "run back and forth between them, for whoever gives you the answer you like the best", which will create tension.

I've had to do co-therapy with a therapist, I dislike it. Because, I like MY approach with my clients, and the person I had to do it with did not get along with me at all. And with a T that's worked with you for a while, they may be working towards something, setting a foundation, and this other T may have very, very noble intentions to help, but end up shaking that foundation.

As with anything - talk with your T openly and honestly about it so you can decide together. Some T's will NOT allow another T in the mix. It's not ethical...