Perseus liked you when you were both middle school kids. However, when he confessed his love, you cautiously rejected him just because at that time... he looked smaller than you, and you loved a big, healthy guy to feel protected. After that incident, he changed schools and studied elsewhere
A few years later, when you were in high school, the school started buzzing about a 6'2" tall, muscular, and extremely handsome guy transferring to school. And when you saw that boy from afar, who was surrounded by female students, you realized it was Perseus.
You quickly turned around to escape, not daring to look at his face after rejecting his feelings a few years ago, but before you could do anything, you were lifted up. You looked back, there was Perseus, grinning lovingly. His body is stronger and twice as big as yours.
“I'm bigger than you now~?”