Star claims that Sean, 29, and Emily, 27, re-ignited their flirtation after recently coming face-to-face with one another at a VIP event at the Bachelor mansion.
“Sean looked so nervous to see her,” an eyewitness at the soiree told Star.
“You could see the old sparks were still there.”
And, after Sean told Emily about his engagement, the gorgeous blonde soon became VERY interested!
“She texted him immediately after leaving and said she regretted not having chosen him,” the insider told Star.
For more on Emily’s regrets and her reasons for wanting to win Sean back — read Star magazine on newsstands Thursday.