Mahal tika is a visayan phrase that means "I love you". The visayan dialect is not the national language of the Philippines, but is common and mainly spoken by those in the lower part of Philippines within the Visayan Islands (Cebu, Bohol, etc.).
j : hey! you!
c : me?
j : yes, you!
c : uhm, okay? what do u want?
j : mahal kita!
c : w-what did you just said?
j : i said mahal kita!!!
c : oh.. *blush* uhm.. okay- m-me too.
j : WHY TF ARE U BLUSHING ?! AND NEVERMIND, U'RE SO MEAN! *walks away*
c : ....