The former couple, married from 2003 to 2006, kept the encounter rather friendly even posing together -- with their tongues touching -- for a photo the Jane's Addiction guitarist shared with his 238,000 Twitter followers.
Electra's steamy moment with her ex comes a month after she was linked to clothing designer Tal Cooper.
"We are taking it slow and really trying to get to know each other, but so far we are really happy!" she told E! News in March. "He's gorgeous and a lot of fun."