Every relationship takes work and compromise.
Sometimes it is the bathroom toilet seat, sometimes the cooking, sometimes who takes out the trash, and in your case it would include who gets to top.
The idea of toys and sexual exploration is also a great one. You'll have to figure out who gets to use it/them on who first and second and third and fourth...
For the relationship to work, it is going to take more than sex. So, this is just ONE of the parts of making it all work together.
If you are both secure in your relationship and each other, then a third person or surrogate is really an option.
The two of you together can sort through the available tops and select the one(s) that you think each other would like and even try directing. You could, for example, take the third and put his cock in your boyfriends hole and make sure your boyfriend is taken care of, and then vice versa.
As long as you all understand that the third is being used for his cock and topping skills, then it can work.
