And it's none other than his ex wife Kris Jenner!
According to a source:
[Image via WENN.]
We kid, we kid…
"Oh snap, we got married. JUST KIDDING!!!"
…which sent all his IG admirers into a frenzy, even though he was clearly joshing all of us!
This is what we call fanning the relationship rumor fire — since James and Lana have been linked, even when she was still dating her former boyfriend Barrie-James O'Neill.
The pic he posted yesterday, however, seems to be a throwback to a beach photo sesh the two had three weeks ago!
Perhaps he was feeling nostalgic about his melodic pal!
We have no idea if there's actually something going on between this pair, especially because James was spotted with a model earlier this week — but we'll continue to wonder until more info unfolds on Instagram!
[Image via James Franco/Instagram.]