The 26-year-old singer proved her relationship with Kinney is getting serious by staging the onscreen wedding for her latest music video, reported Contactmusic.
Gaga has been dating the actor for a year and they have now shown off their love publicly by dressing up as bride and groom in a new promo for 'You and I'.
The pop superstar is seen wearing a white gown and veil as she kisses Kinney, who is dressed in a white suit.
The video is the latest in a series of "fashion films" which Gaga has been releasing to accompany the song, which she previously revealed was written about her relationship with ex-boyfriend Luc Carl.