Ben Affleck is really making his relationship with girlfriend Lindsay Shookus official because now he's taking her to industry events and the couple even went to an Emmys pre-party Saturday night!

Lindsay had on a sexy short black mini-dress with strappy heels and ben wore an awkwardly plaid-ish suit. But the couple were having the time of their lives and it's good to finally see Ben laughing again -- he was busting out of that three-button blazer!

Linds and Ben just returned from New York where they were reported spotted house hunting together. Though neither is officially divorced from their spouse, the two apparently have plans to make their relationship a long-term one. In fact, Lindsay's already integrating into the LA scene -- she went to a SoulCycle spin class Saturday before the party!