Theory: Love Triangle

Is it just me, or is there a bit of a war between Zoran and Thomas over the attention of Susannah?

Now, its pretty much certain that Thomas has a thing for Susannah but I'm not sure wether Susannah just prefers Zoran or Zoran prefers Susannah. Either way, Thomas doesn't seem to like it one bit, whenever Susannah and Zoran are talking alone you can pretty much bet that Thomas is not too far away, ready to pop in as the third wheel.