The 35-year-old hip hop star entertained a crowd of thousands for a solo concert at Revel Resort in Atlantic City on Friday night.
But the Grammy winner only had eyes for girlfriend Kardashian, watching the show in the VIP box with friend Jonathan Cheban.
The reality star, 31, joyously sang and danced along during her West's raved-about concert, his first solo appearance in over a year.
West serenaded his love directly while performing one of his newer songs, "Way Too Cold" (formerly known as Theraflu).
In the instantly famous track, which first leaked back in April and helped confirm the Kardashian-West romance, West raps, "I admit I fell in love with Kim."
At another point during the show, West bellowed to the crowd: "If you love someone tonight... Hold on real tight!" Kardashian hugged Cheban and then herself jokingly.