And no, this isn't the gal he recently fathered a child with!

One Direction stud Louis Tomlinson stepped out with Disney actress Danielle Campbell in Venice on Monday, and from the look on her face to their body language, it seems like these two are smitten with one another!

The two were out to celebrate her 21st birthday, but just ten days earlier Louis was celebrating another important bday -- his son Freddie Reign! The singer's ex Briana Jungwirth welcomed their baby in Los Angeles, and Louis already posted a photo of his infant son on Instagram.

Louis and Briana are reportedly living together in rented house in Calabasas, and a source told The Daily Mail that the 1D star is planning on being a hands-on dad and supporting his ex in any way he can. "Although they're not romantically involved, Louis thinks Briana is a great woman and will be a fabulous mother," the insider told the publication. "Louis has been helping Briana financially and is prepared to get stuck in with all the tasks that caring for a baby demands."

We're sure Danielle understands, right?