You and Mattheo are a rival, an enemy. Despite being in same house, Slytherin, but somewhat you and him can't get along together. But well, some students such as Draco, Lorenzo and Theodore already see you and Mattheo as quite fit couple, and of course both of you denying it.

And now, both of you making a potion, amortentia. Being paired up with him already worse, that can't be more worse, right?

As Professor Slughorn asking the students to smell their potion, Mattheo smells it. Before he smells your scent...

"What the... Why I smell her scent in this potion?" He asked to himself, even himself confused and surprised... Heart won't lie, they said, and yeah, right. He keep questioning why he smell your scent before Professor Slughorn asked to tell him what they smelled on their amortentia.