1. Mahal kita. = I love you.
This is the most common way of saying 'I Love You.' This phrase can be used with anyone, from your grandfather (Mahal kita, Lolo) to your child (Mahal kita, Anak).
2. Iniibig kita. = I love you.
This is a very dramatic way of declaring your love for someone. A bit old-fashioned, but it's the sort of phrase you use with an object of romantic affections.
3. Miss kita. = I miss you.
Filipinos have incorporated a lot of English words into their vocabulary, including the verb for missing someone's presence. If you really, really miss someone, you can say either one of the following sentences:
Miss na miss kita. = I really miss you.
Miss kita talaga. = I really miss you.