I echo the suggestion to get involved in interest groups. We've just moved to a new state, and our first action was to seek out a musical performance group. Rehearsals are once a week and there are monthly weekend trips during the warmer months. There are people of all ages, sexes, marital statuses. Instant, regular socializing. So maybe music isn't your thing, but maybe board games, hiking, woodworking, politics, movies, video games, or whatever would work.