It is about "unrequited love" or "one-sided love". The person is trying to hide her feelings from him, yet she still wants to be with him though it kills her everyday. Since she is already acquainted with the guy, she knows that their relationship would not step to a higher level. However, she hopes that her love would be reciprocated.Hence, she gives hint to the guy that she likes him longing that he will receive it for she could not wait for a lifetime.And when the guy would ask her about it and would admit that he likes her too, she would do everything for him. Thus the title "SUNTOK SA BUWAN" which Literally means "punch to the moon." It refers to someone's attempt at a long shot or a one-in-a-million chance at something that he/she desires. A similar English phrase would be "to shoot for the moon."