The 37-year-old former "Desperate Housewives" actress confirmed her relationship with the 25-year-old athlete in an interview on "Extra."
"Mark and I are, you know, fine. We're happy just dating," she told host Mario Lopez.
Longoria was most recently romantically linked to Spanish actress Penelope Cruz's brother, Eduardo. That relationship ended in June, the Los Angeles Times reported. She had previously been married to basketball player Tony Parker.