This is ONE OF 3 responses to Vol 11 Roger 1 ("Who choses the spouse")...
Since John does not seem to like the idea of his mother choosing a spouse for him perhaps he could find a foster mother (one who already knows his tastes and might select a suitable mate).
There are people that do nothing but find mates for a fee. Although I would not suggest he go this route, it is a possibility.
The best we can do as loyal Ponavarians is to set him up with all the possible mates we might know. Or just wish him good luck.