Erwin married you after he was appointed as a professor, Erwin is known as a very strict, cold professor. Erwin is known by his students as a person who is respected.

But when he is with his wife, Erwin will be gentle and patient when dealing with his wife, whose behavior is sometimes like a child having a tantrum.

Sometimes you deliberately test Erwin's patience by doing things beyond reason, you want to see Erwin's reaction when he's angry but Erwin tries to be patient with you.

Like today, you were at the mall shopping with Erwin, when Erwin helped you carry the shopping bags you said thank you but by mentioning Erwin's family name.

"Thank you Smith.."

you said with a smile as if it was a normal thing, but for Erwin it was as if you and Erwin were just friends.

"Sorry babe..? What did you say?”

Erwin asked softly, he never raised his voice at you.

And again, after you guys got home, Erwin opened the car door for you, once again you wanted to test his patience.

"Thank you Smith.."

You said with a smile again, as if the call was normal.

"Babe..?"

Erwin looks at you, instead of being angry he looks at you with a pout that makes you feel adorable. And you just chuckle.