Of course there is a love triangle here, and a heavy one at that! The girl doesn't need to be interested in the other guy to form a love triangle... two people showing interest in the same person forms a love triangle... SMH
Some people think that a love triangle requires everyone to like everyone but that's nonsense, since a triangle just needs three even if they don't even like each other... in Dramaland, is if anyone likes one of the leads besides the other lead