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Jennifer Lopez has a number one fan in her boyfriend, Alex Rodriguez.

After releasing the cover art for her hot new single, "Ni Tu Ni Yo," on Thursday, the Latina star wrapped up the week by filming Macy's 4th of July Fireworks Spectacular show. Her all-star beau took a front row seat and captured the "Ain't Your Mama" songstress singing and dancing through her set in the highest double thigh slits we've ever seen.

And while we technically have to wait until the 4th to hear her latest track, A-Rod gave us a sneak peek as our Independence Day gift, sharing a snippet of the catchy tune on Instagram.

VIDEO: Here’s a Smitten J.Lo Blowing a Kiss at A-Rod

A video posted by the baseball legend shows the camera focused on the New York City skyline before panning to the stage where Lopez is dressed in an epic Fausto Puglisi black gown that was previously worn in white by Kendall Jenner at the 2014 MuchMusic Awards. The ensemble featured gold jewel embellishments down the front and sexy double slashes that cut up to her hip bones, which may have riled up the crowd just as much as the rendition of J.Lo's new song.

After their evening of music and dance, the besotted lovebirds kicked off their holiday weekend by stepping out for a night on the town.

Catch Macy’s 4th of July Fireworks Spectacular on July 4 from 8-10 p.m. ET/PT on NBC.