Shawn Mendes has made it official; he is off the market. Mendes’ latest love, Bruna Marquezine, is a Brazilian star. This is everything you need to know about …Shawn Mendes has made it official; he is off the market. Mendes’ latest love, Bruna Marquezine, is a Brazilian star. Meet Bruna Marquezine, Shawn Mendes’ girlfriendWhile Bruna Marquezine might be a new name to some of Shawn Mendes’ fans, she is very much a star in her own right, not just his girlfriend.