Collocations for gay - adj.

be, look, sound
act
become, turn

openly
He is openly gay.

gay and lesbian
the gay and lesbian section in the bookstore

Gay is used with these nouns:
affair, bar, club, community, consciousness, couple, culture, friend, guy, icon, identity, liberation, lifestyle, literature, lover, magazine, male, man, marriage, neighbourhood, nightclub, parent, partner, partnership, people, person, politics, press, pride, relationship, right, scene, sex, sexuality, union, wedding, writer, youth