why does BOLT love mittens

Bolt doesn't love mittens, they are more of friends

They Should Be Together! I Love Bolt x Mittens Couple :D

*Spoiler*
They are just good friends

no he is a dog and she is a cat it cant work

They are friends. Bolt is all about Penny anyway. Or maybe that's more of a platonic love...

It's because he thinks that Mittens the cat is super duper cute in the movie.

Why bolt should love mittens?

Well Disney never said BOLT and Mittens are a couple. But if they were I think it's because Mittens showed BOLT how to be a regular dog and Mittens
is his friend. But that's what I think.

They are not in love, some people think it, but they are not, there just REALLY SUPER DUPER GOOD FRIENDS! Don't get me wrong, I have seen the bolt move like, over a million times, they have never done 'the look' before, (that means the love look, were they show love in there eyes) and here is a picture i made of bolt: