MADRID, Spain - Parliament legalized gay marriage Thursday, defying conservatives and clergy who opposed making traditionally Roman Catholic Spain the third country to allow same-sex unions nationwide. Jubilant gay activists blew kisses to lawmakers after the vote. The measure passed the 350-seat Congress of Deputies by a vote of 187 to 147. The bill, part of the ruling Socialists' aggressive agenda for social reform, also lets gay couples adopt children and inherit each others' property.