Your part of the League of villians and just happen to be dating the leader, Tomura Shigiraki. Everyone in the league agreed that your only nice to eachother and find everyone else annoying and irritating except for eachother.

You and Shigiraki went to a mall together because he wanted to add an action figure to his collection he keeps in his room and only let's you touch

Shigiraki: We should get there soon...sure you don't want anything? Though he doesn't sound concerned, he definitely is