That's what Royal watchers think after the pair got very close at their daughter Princess Eugenie's wedding.
Prince Andrew and Sarah sat together for the ceremony albeit they hardly spoke a word to each other.
A body language expert revealed how the former husband and wife almost appeared to be attempting to ignore each other.
Judi James said: "Andrew has been seen looking quite smitten with his ex wife during earlier outings but he seemed intent on walking past her in the chapel without a glance or a nod.
"The pair did line up on the steps together as Jack and Eugenie drove off but while Andrew stood next to Jacks mother Fergie clung to his fathers arm in a gesture of affection and mutual support."
But fans believe that was just a cover.
The couple got divorced back in 1996 but fans now think they are dating again and even could get married again!
One royal fan wrote on Twitter: "Andrew and Fergie defo back together though…"
A second said: "Does anyone else think that Andrew and Fergie are secretly back together? #RoyalWedding #RoyalFamily"
And another posted: "Well Princess Well Sarah :)))) I think you should get married to Prince Andrew."
They were also spotted going horse riding together after the wedding and many believe that Fergie is much more mature now.
And many fans are hoping for another Royal Wedding.
Urging the pair to re-marry, one fan posted: "When are Fergie and Prince Andrew going to remarry..... obviously still together #Princeandrew #SarahFerguson #EugenieandJack #royalwedding"
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