The phrase "suitable mate" refers to a person who is a good match or partner for someone. It means finding someone who is compatible, understands, and complements you well in a romantic relationship. Full definition
Scientists generally expect each insect species to have its own signature perfume to attract suitable mates. (sciencedaily.com)
Ukrainian women are proud of who and what they are, and they're a lot of different things, and yes, they make suitable mates as well. (ukrainiandatingblog.com)
The scientists write in their paper that if an invasive species used the same pheromone as a complex of native species, the chemicals emitted by the natives might prevent the invaders from finding suitable mates. (sciencedaily.com)