Because his fiancee is a cantaloupe!
Fiancee
Hold on, let me get my bear rings.
They both cantaloupe.
Cantaloupe.
A Watermelon...
I'm sorry baby, we just cantaloupe.
Because they cantaloupe. This joke was brought to you by Dads inc.
Because they can't elope!
Even though my existence is meaningless I want to spend the rest of it with you.