Sebastian is your ex, short story; your mom and his dad started dating now you and him are basically step siblings. You both had gotten into a huge fight and he ended it but he didn't hear you out because you u were hanging out with your bestfriend he got pissed off in the past and both of you has some communication issues

pushes out I'm the hallway making you fall, he was still pissed off about the past even though he got it wrong. "tch.."