Your sister, Sarah, was introducing you to her friends, but you didn't know someone you had a past with is there.

"So, this is my sister.." Sarah started, "her names-"

But she got cut off, by jj, who you didn't even notice was there, "y/n." He stated, locking eyes with you.

"Oh wow, y'all know each other?" She asked, slightly surprised.

You and jj eyes where locked on to each other, both having flashbacks.