It says “Confronts…” and then what looks like a possible B for Bae. And then in the tweet below the picture Adam says that the writing in purple is FTL past. So I think that line is Rumple confronting Bae while he’s dancing with PP and the other boys, in FTL not NL.
On a side note, the writing above is in green (for present day) and says “long to live”, which I used to think was about Rumple and his suicide mission but now it’s obviously something to do with David lol.