Still hung up? Karrueche Tran publicly cut ties with her on-again, off-again boyfriend Chris Brown earlier this month, but the polarizing singer may not be over the model quite yet.

Brown, 25, made no effort to hide his Instagram-stalking of Tran, 26, when he commented on a sexy bikini photo that she posted on Tuesday, March 17. Tran has been sharing shots from her Cancun beach trip with pal Christina Milian, and gained particular attention for a snap of herself sporting a skimpy two-piece.

Read More: celebrity.yahoo.com