AceShowbiz -

Lena Dunham has nothing but love for boyfriend Jack Antonoff who turned 31 years old on Tuesday, March 31. "Happy 31st Birthday to my great love @jackantonoff. I am awed by you every day, and so lucky to be yours," so she captioned an Instagram photo of herself and Antonoff.

Happy 31st Birthday to my great love @jackantonoff. I am awed by you every day, and so lucky to be yours.

A photo posted by Lena Dunham (@lenadunham) on Mar 31, 2015 at 9:03am PDT

Later that day, Dunham posted two other photos of Antonoff. "America's next top smile," so she captioned one pic. "Another favorite shot of the birthday boy," so she captioned the other one.

America's next top smile

A photo posted by Lena Dunham (@lenadunham) on Mar 31, 2015 at 11:22am PDT

  Editors' Pick

• Doja Cat Slams Elon Musk Over Removal of Audio Posts on X
• Inside 24 Hours With Luke Evans: Broadway Stardom and Bold Transformations
• Remembering Death Cab for Cutie’s Enduring Legacy and Impact on Music
• Celebrated Actor Tim Curry Leaves Lasting Legacy in Horror and Entertainment
• Robert Pattinson Reveals Intense Training Regimen for The Batman Role

Dunham's BFF Taylor Swift also gave a birthday shout out to Antonoff. The songtress took to her Twitter and wrote, "OMG Jack you just turned 31 on the 31st! And 31 is basically just 13 backwards. And 13 is my lucky number! See how I made that about me?!" Swift then added in another tweet, "Happy Birthday, @jackantonoff! May you always keep your youthful enthusiasm showcased in this photo."

OMG Jack you just turned 31 on the 31st! And 31 is basically just 13 backwards. And 13 is my lucky number! See how I made that about me?!

— Taylor Swift (@taylorswift13) March 31, 2015

Happy Birthday, @jackantonoff! May you always keep your youthful enthusiasm showcased in this photo. pic.twitter.com/H2crGtgFxE

— Taylor Swift (@taylorswift13) March 31, 2015