An apple might love an orange. Apple’s family might not approve, they might think that an apple can only love another apple. I say, love whoever you love loving.
In the end, they are both fruit.
It might not always be easy. A bird may love a fish, where would they build a home together?
A cow might love a chicken, will their baby produce eggs or milk?
Things like that will need to be worked out, but no couple is perfect.