Until recently, Raúl Castillo was known primarily by those who watched HBO’s “Looking,” a show about thirty-something gay men in San Francisco, and saw his performance as sensitive barber Richie. Four years after the end of that show, Castillo’s everywhere. He has appeared on the Netflix series “Atypical,” landed a spot on the Starz show “Vida” and most recently played one of the leads in the breakout film “We the Animals.” Maria sits down with Castillo to discuss how he went from a punk band bassist in McAllen, Texas, to a playwright in Boston, and then to a celebrated actor in New York City.