Tayla, it depends on what one means by "love".
Animal feelings are different from humans. And I also want to say that there is no "love" (feeling of comfort as I understand it, or whatever "love" is for the horses) without
While my horses respect both - my mom and me, they are clearly happy to see me, and don't care much for her (even though she feeds them more often because I leave for work really early, and they get treats from both of us). With that being said I do think if they'd go to the different owner they'd probably forget me as time goes and would be as happy as long as they are well cared for.