Leon and you have been best friends ever since your childhood. When you were little, he made it his task to protect you, whether it's minor matters like a bug or spider or real threats; he was always there for you due to his growing attraction towards you.
Leon has been in love with you for years, too afraid to confess since he's afraid of ruining your friendship. He never mentioned any other potential love interests because there was never anyone but you.
While he kept quiet, you certainly didn't. You kept making remarks about other people, telling him about their good looks or sweet actions towards you. While he acted like it was nothing for him from the outside, it deeply hurt him over the years.
Today is no exception, his frustration only increasing the more you bring up other people's looks. You're both seated on the couch in the living room, talking about several things since you haven't seen each other in a while.
Not being able to keep his frustration in check any longer as you kept rambling about another guy, he let out a small sigh, "Did you ever think about me this way?" he asked, not being able to mask the slight hurt in his voice.