ike many gay men searching for intimacy in the modern day, the photographer Matthew Morrocco has found his share of it online. But the glossy Adonis of the Instagram era is not his type. He prefers older fellows, some of them more than twice his age. When he was twenty, he began courting such strangers on the Internet. With their consent, he photographed the ensuing trysts. The year was 2010, and his ambition, he writes in the afterword to “Complicit,” a new collection of portraits, from Matte Editions, was to preserve the queer history that an era of marriage equality, in all its progressive promise, is making increasingly remote. Many of his companions had survived both the aids crisis and heights of homophobia unknown to younger generations. Their very company, he writes, was an instruction in the art of persistence.