second option

Second Choice means that they chose someone over you first but they could always go to you as their second choice (simplified version) they picked someone over you (if that happened to you I'm sorry it did it happened to me to do don't feel alone love you boo ❤️)

He chose her over me which makes me the second option
She chose him over me which makes me the second option
They chose them over me which makes me the second option