Musician Jack Antonoff may be best known for being Girls star Lena Dunham's boyfriend, but there is much more to him than being Lena's award-show date. The talented singer and songwriter has been in the music industry for more than a decade with his bands Steel Train and Fun. and, most recently, the solo project Bleachers. With his romantic lyrics and ridiculous antics, he's become one of our biggest crushes, and now it's your turn to fall for him. Keep reading to see all the reasons to start crushing, from incredible songs — both on his own and with Taylor Swift and Sara Bareilles — to his re-creating of '80s and '90s favorites like Teen Witch and dial-up Internet.
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