My husband and I use the the same T for individual therapy and also for couple's counseling on occasion. (He also works with one of our sons.) It has worked beautifully for us because he knows both of us equally well and has a fine tuned grasp of our family dynamics. Neither of us are possessive or jealous of someone else seeing our T, so that hasn't been an issue at all. I think it depends on how you will respond individually to your T working with someone else right in front of you (and sometimes you may be on the hot seat). Can you handle that dynamic? If so, it should probably work. If not, a separate "neutral" T might be a better fit.