Neil Patrick Harris and partner David Burtka are engaged after same-sex marriage was legalized in the state of New York Friday night. "David and I did propose to each other, but over five years ago!" the How I Met Your Mother star said. "We've been wearing engagement rings for ages, waiting for an available. date."

Harris and Burtka became parents in October 2010 when they had twins through a surrogate.

Before the state law was passed, Harris Tweeted Friday evening the he would "sure love to get married." He went on to write: "Please, New York Senate, vote in favor of marriage equality today. My family would really appreciate it."

Click through to read what other celebs Tweeted after the equality bill was passed ...

CBS

If Neil Patrick Harris is trying to embarrass his twins when they grow up, he's going about it the right way!

On Thursday's Late Show With David Letterman, the How I Met Your Mother star, and proud papa of seven-month-old twins Giedon and Harper, revealed he and partner David Burtka are making a monthly calendar of their twins -- complete with holiday-theme dress!

Harris revealed to Letterman, "We do one a month. We're doing a calendar so that when they're older, we can humiliate them and embarrass them. We go to Party City and get all the great stuff."

Loves it!

But the pics prompted Letterman, who is a parent himself, to quip, "You know that babies are more than party props?"

Ouch.

Check out the rest of the twin's adorable holiday calendar pics (you wont believe the Cinco de Mayo shot for May!) after the jump ...

WireImage

AnnaLynne and Angel McCord joined Vanessa Hudgens and new daddy Neil Patrick Harris for a sexy night out at The Lounge at Bar Basque in New York for Svedka Vodka's party celebrating the upcoming 2011/2012 television season.

The sexy 23-year-old 90210 star, wearing bright yellow nail polish, recently opened up about wanting to leave her hit CW show. AnnaLynne tells Entertainment Weekly:

"Honestly, after about three years on a show, you are like, 'Thank you very much for giving me a step up. Now can I go do movies? We love our job and we love our fans especially, but you're always ready for that moment when you can break free."

Great to see Neil Patrick getting out from his daddy duty with the twins. Hanging with the sexy Vanessa Hudgens is always a bonus! See which of Tom Brady's ex-girlfriends was there, too ... after the jump.

Twitter

Neil Patrick Harris is so proud of his family, and to prove it, he tweeted the above pic of his partner David Burtka and their twins, Gideon and Harper.

The How I Met Your Mother star also wrote:

"Relaxing on a Sunday afternoon. My heart is full of love."

Although the 37-year-old star is missing from the photo, the six-month-old twins couldn't be happier posing with their other daddy. Adorbs!

The babies were born last October via surrogate. Read what Harris tweeted following their birth ... after the jump.

Neil Patrick Harris and partner David Burtka have two of Hollywood's cutest twins ... son Gideon and daughter Harper.

The sexy daddies made their way through LAX with their 4-month-old bundles in tow. Looks like David is one hands-on papa. Adorable!

Neil and David, who have been together for seven years, welcomed the babies last year on October 12 via surrogate.

Find out when when the How I Met Your Mother star first came out of the closet ... after the jump.

Neil Patrick Harris and partner David Burtka welcomed twins earlier this week -- a boy AND a girl.

Today Neil tweeted:

Babies!! On 10/12, Gideon Scott and Harper Grace entered the Burtka-Harris fold. All of us are happy, healthy, tired, and a little pukey.

Harris announced that he and his partner were expecting, most likely via a surrogate, in August.

Congrats to the new fam!

What's better than a hot man in a hot suit?

Ed Westwick, Neil Patrick Harris and Bradley Cooper ditched the VMAs and headed to the east coast for New York fashion week to catch Tommy Hilfiger's show.

While each of these dudes look like they could actually be walking the runway, Christina Hendricks looked sexier than and stick figure could on the catwalk:

Wouldn't you like to see models look like her?

Emmy nominees Jon Hamm (Mad Men), Kathy Griffin and Neil Patrick Harris all stepped out for Emmy weekend's first big night of parties with the Women In Film (and TV!) Emmy pre-party last night in Hollywood.

NPH, who's expecting twins via a surrogate, is an Emmy triple threat! He's up for 3 Emmys this year and already won two at the Creative Arts ceremony last weekend for Outstanding Guest Actor in a Comedy Series (Glee) and Outstanding Special Class Program (Hosting the Tony Awards.)

Can he make it a hat trick tomorrow night with a win for Best Supporting Actor on How I Met Your Mother?