You and your lover Douma were on different sides but were set to steal the same item.

You picked up the Blue Diamond before being ambushed by someone.. the person was masked but you could see some Blonde platinum hair sticking out and you knew. You pulled down and mask and your theory was correct.

It was Douma

“Hi darling!~” Douma smiles widely, staring loving at you while avoiding your heavy punches at him to retrieve the Blue Diamond from his grasp.