I have a head cannon that in times after Peter gets hurt MJ likes to wait for him to fall asleep and then cuddle up to him with her head close to his chest. Just so she can feel his body rise and fall and so she can hear his heartbeat. Peter always pretends to be asleep but he knows she does it when she is afraid. it breaks his heart that he hurts her and he never tells her he knows
omg. why would you do this to my poor soul. my girl MJ padding her head on her boyfriend’s chest holding her breath for the steady rise and fall of peter’s chest. because, ugh, she needs him to be okay. and peter wants her to be happy. so he indulges her fretting over him as he “sleeps”.