Watch Zooey Deschanel and Joseph Gordon-Levitt's (almost too cute) New Year's Eve duet

It's a 500 (Days of Summer) reunion, as Zooey Deschanel and Joseph Gordron-Levitt reunite to sing a little ditty about New Year's Eve. And, since it's a 500 (Days of Summer) reunion, that means approximately half of you will find this charmingly cutsie and the other half will give a massive eye roll and make a noise I can only transcribe as "blee-uch." Those of you in the second camp, be warned — there is a ukulele in this video:

They're right, you know. Inviting someone you're involved with can be stressful, especially when you in that transitional stage between "seeing someone new" and "I hope my cats like your place because it is their new home." So, just to help you out, here is a handy list of holidays in order from most to least serious to help you figure out when it's right to invite your special someone: Christmas/Hanukah, Valentine's Day, New Year's Eve, Passover, Anniversary of Pearl Harbor, Kamehameha Day (in Hawaii), Thanksgiving, Purim, Flag Day, Easter, Arbor Day, Kamehameha Day (everywhere else). You're welcome.