They just stand by each other and love each other.
And we put the spider and the pig together because we only have one spider and one pig.
Mom, you think you are so funny.
I know I'm not funny. To you. Ha ha.
Dad thinks I'm funny.
That's only because he's your love pair.
(And I totally just took literary liberty here with this last sentence)
So, what kind of love pair is this?
Oh the butterfly and caterpillar aren't a love pair.
The caterpillar is too little.
And, they aren't married yet, right?