Why do i get hypnotized by a girls looks even when she is so much trouble n stress and flaky?

we would talk and its ok, then she start only replaying 1 message to every 5 message i give. and is very inconsiderate. but i keep wanting to talk to her bcause im hypnotized by her super hot pics. why do i keep getting hypnotized even tho the girl is just giving me stress. how can i stop this madness.