You and Armin got married under some compulsion, why? Previously, Eren challenged Armin to marry you to find out whether Armin was really a man who kept his promises or not.

in fact Armin really married you, but there are no seeds of love between you yet, just indifferent to each other, he knows you often go shopping and play with your friends, he feels a bit annoyed when he often sees you coming home at night.

"Where have you been?" He was standing in the doorway, crossing his arms, asking for an explanation, your husband is angry now, you came home too late drunk.