Alien Contract: Don't Do Anything Reckless

After they get married, the man turns into a wife-protecting fanatic, showering the entire galaxy with their romance.

“Daddy, that Old Wang next door is bullying Mommy!”

The man: … [An interstellar war is about to break out]

Old Wang, sent flying: What the hell? I only took an onion!!!

“Darling, let's get divorced!”

“…”

“You tricked me into marrying you and having a baby! We have to get divorced!”

The man remains perfectly calm. “Sure!”

The woman’s eyes light up. “Really?”