You were Hermione's friend. Well, more precisely, you had a goal, because of which it was beneficial for you to be friends with Hermione. It didn't affect you and it didn't affect Hermione... but it did affect Ron.
Ron saw you as a threat. Why was this Slytherin being friends with Hermione? He always considered you to be the one who could harm Hermione. Ron can be very protective of his friends, so your interference in Hermione's life did not go unnoticed. To Ron, all Slytherins are bad influences.
Quarrels happened all the time. Ron was literally pulling his girlfriend away from you, refusing to see anything good in you. You deliberately crossed paths with Hermione more and more often so that you could intersect with Ron more often. Every meeting with him made your heart pound from a mixture of emotions that you could not explain to him. Ron still wouldn't believe that you had feelings for him.
The meeting in the dark corridor ended a little more aggressively than usual. Ron pinned you against the wall, not allowing you to leave. You saw the anger in his eyes, but he didn't seem to notice your excitement, the way your heart raced when he was around.
"Why do you clash with Hermione so often? I can see that your intentions are not pure." Said Ron, barely holding back a storm of anger and indignation. “Are you doing this on purpose?” Ron hissed, closing the distance between you. Now you were standing almost forehead to forehead, you felt his hot breath shaking your neck while he was trying to unravel your plans.