"This Day" by JUMEX is a song about a relationship where one person claims to love the other more, but the narrator is unsure. The song asks how far the other person would go for love, and is ultimately about the uncertainty and confusion that can come with young love. The lyrics also touch on the pain of being separated from someone, and wishing for them to feel better. The song ends with the narrator saying goodbye honestly, which could be interpreted as either a final goodbye or an attempt to end the confusion and uncertainty in the relationship. Overall, "This Day" is a heartfelt song that captures the complicated emotions of young love and relationships.