Talk:Egao no Kimi wa Taiyou sa / Kimi no Kawari wa Iyashinai / What is LOVE?/@comment-188.204.186.113-20140105155654

when I heard 'Egao no Kimi wa Taiyou sa' I didn't like it because I like up-tempo songs like What is LOVE? (But my favorite song is still Mano Erina's 'Song for the DATE') But the third time I heard it I was going to love it because it's a happy song(can anyone explain why?)