EXCLUSIVE: Jennifer Lopez is 'Head Over Heels' For Drake, Source Says

The two first sparked romance rumors in December.

Looks like Jennifer Lopez and Drake are doing more than just making music.

The 47-year-old singer's romance with the rapper is heating up, a source tells ET, revealing that she's "really happy."

WATCH: Jennifer Lopez Stuns in Chic Style for Another Night Out With Drake

"She's head over heels for Drake," the source says. "It's a new relationship, but she really likes him. She's really into him."

The pair first sparked romance rumors in late December, after the 30-year-old rapper visited Lopez at her Las Vegas show. Drake and J.Lo were spotted enjoying an intimate dinner in Hollywood just before Christmas, and celebrated New Year's together back in Vegas. 

While the two haven't been shy about sharing PDA pics from their cuddle sessions or nights out on the town, Lopez played coy when ET asked her about her rumored relationship with the rapper at Wednesday's TCAs.

WATCH: Jennifer Lopez and Drake Kiss, Dance and Pack on the PDA at Prom-Themed Party

"He just asked me to do a song with him and that's what we've been doing," she explained.

"We'll see if it's on his next album," she added, staying tight-lipped about the non-work side of their relationship. 

See more in the video below.