This is from 1x04 when we see the memory demon
Jace-you were on the pentagram your memory was of Simon since he was your brother and jace's was of you.....
Alec-your memory was of your mom Jocelyn along with clary but Alec's memory was of you but he hated you or did he
Magnus-your memory was of Alec you had a crush on him but Magnus had a memory of you and after he didn't care that you knew because he wanted you to know
