Nas, Kelis Spend The Weekend Together [PHOTOS]

Nas, Kelis were spotted spending the weekend together in Santa Barbara with son...

Nas and Kelis insist they aren't getting back together, but they were out this weekend at the very romantic and luxurious Bacara Resort & Spa in Santa Barbara, CA with son Knight.

As TMZ first reported, Nas says he and his ex are becoming friends -- following a nuclear divorce -- for the sake of their 3-year-old son.

Our luxurious spies tell us .. Nas and Kelis were having lots of fun ... getting along great ... BUT nothing seemed romantic.

Do you think Nas, Kelis are rekindling their romance and just keeping it on the low because their very public breakup was so nasty?