I think when you set out to do anything as a couple, you need to not only set a goal and your priorities, but also re-evaluate them at intervals. I have been in a similar situation before, and learned the hard way. If your priority is to dance as a couple, then you need to figure out a way for the more advanced partner to hold their horses, as the other one catches up. The suggestion to learn opposite roles is great. I would also suggest that whoever is having more trouble takes some private lessons separately to help out. But in a situation where one of the partners begins to feel they want something more from their dancing, other approaches may be best. Many people named Pro-Am dancing, which is great. In my case, I actually began to dance professionally, as my then-boyfriend quit completely. This wasn't as bad as it sounds. We talked, and he realized he wasn't interested in dancing any more. So we enjoyed other activities together, and left the dancing to me. If you still want to dance together, however, you have to be clear that you will expect more advanced stuff from your instructor/new partner/etc., and will not look bored or give a hard time to your original partner when you dance together. Just look at it as two separate experiences - one is to advance your dancing and push yourself, and the other is to relax and have a good time with someone you love.