As an animal researcher, Meghan Martin made groundbreaking discoveries about how giant female pandas choose their mates. She realized that they wouldn’t shack up with just any old male. They wanted a choice. The same held true, she would learn, with rabbits, birds, and other species. The question for Meghan was this: Could she apply those lessons to the human world—to her own world? Plus, we visit a Rhode Island animal shelter that raised money by letting people pay to have cats defecate on the names of exes. Email us at loveletters@boston.com. You can also send relationship questions to Meredith and sign up for Love Letters updates by texting 617-744-7007.