Tagalog: Mahal kita (formal), Mahal mo ako (informal)
Cebuano: Gihigugma ko ikaw (formal), Gihigugma ka nako (informal)
Ilocano: Ayakka (formal), Ay-ayatenka (informal)
Kapampangan: Alagung ku keka (formal), Alagung me ka (informal)
Bikol: Namomotan ta (formal), Namomotan mo ako (informal)
Hiligaynon: Ginahigugma ko ikaw (formal), Ginahigugma ka nako (informal)
Waray: Ginhihigugma ko ikaw (formal), Ginhihigugma ka nako (informal)
Pangasinan: Aaroen ta ka (formal), Aaroen mo ak (informal)
Tausug: Mahal ko ikaw (same as Tagalog)
It's worth noting that the formality level can vary depending on the specific context and relationship between the speakers.
Let me know if you'd like to explore other phrases in different dialects.