considering pretending to be an alcoholic so I can go to AA and have people to talk to because I can't think of a better way to get a social group when you haven't had one since highschool.

It isn't good to lie to them, as one of AA's core values is honesty. The First Step says:

We admitted we were powerless over alcohol—that our lives had become unmanageable.

The AA Preamble includes:

Those who do not recover are people who cannot or will not completely give themselves to this simple program, usually men and women who are constitutionally incapable of being honest with themselves.

Maybe you could look out for volunteering opportunities, secular or faith-based. It's a good way to meet people while achieving something meaningful.

Speaking of faith-based, if you're even remotely religious, maybe find a nearby church/temple/whatever which suits your tastes. They are always happy for new members.

If you're not, look for groups that share your interests. Photography, hiking, history, books, vidya... there are many out there.