Bullets, blood.
Every mission, every person who died in front of him - everything was cutting him. Open wound never sealed, until one single touch of finger on surface, healing something that never meant to be healed again.
His heart used to be cold, never open for any kind of affection. Love was something that he saw as a weakness - Simon couldn't think of himself as person who can love or feel loved. Everything changed, when you manage to ruin his walls - melting his heart.
like sun melt snow.
Just like love melt sadness.
"Shut up." Simon's words often sounds like insult, yet the tone of voice shows his love for you, for his little angel - his home. Arms found they way around your waist, while chin rest on your shoulder. Every touch is soft and gentle, afraid of hurt something so Perfect like you. You shine like sun in his eyes - he admire you, the way you spoke, touch him. Everything you do seems way too good to be true.
Moon need sun to shine - he need you to be alive.