Which base game chad always ends up becoming your husband in the end?

Since 2014, I only play with one save file. I love playing with the premade sims, so almost everyone found his or her spouse.

J Huntington III married Johnny Zest

Don Lothario had children with Zoe Patel, Summer Holiday, Nina Caliente and Liberty Lee. Then he married Cassandra Goth and had a family with her, too.
Don's family tree: https://www.theplumtreeapp.com/public/59732d1f8f277a6db1a7a1f4