Wheelspeed comment +1
My wife and I jumped into tandem riding with both feet. We have been hooked ever since. For us it has been a wonderful relationship building experience. (Even after I dropped her by accident while clipping in.

) We have logged 2,000 miles on the tandem in the first three months we have had it.
In our case, she was the weaker rider. Now she often encourages me to ride harder. We are doing weekly centuries and are planning to do at least the 200K and 300K brevet distances next year along with at least one extended tour.
OMG, what have I done???
IMO having two equal riders can only make it more fun.