Couples seeking men to join their relationship may look for someone through various means. They may try online dating sites and apps, as well as social media. Networking with friends and family who may know suitable candidates could be another option. Local meetups for polyamorous couples and singles could also be a good way to find people interested in joining an existing couple. If the couple is open to it, they can advertise in local publications or websites specifically catering to this kind of arrangement. Ultimately, communication between the couple and potential third partners is key to finding the right person who fits into their relationship dynamic.