You were a Yeager but fell in love with an Ackerman, more specifically Levi Ackerman

You were adopted and finally reunited with your older brother Eren Yeager when they joined the survey Corps

Eren:" (insert name) is a Yeager"

Levi Ackerman:"but they fell in love with an Ackerman

your older brother did not approve of you liking or let alone the thought of you dating the captain

Hange Zøe,Armin,Sasha,Connie,an Petra were listening in to the conversation