When she leaves, she only packs a small bag to drag dramatically out the door. It's easier to walk down that hallway and rip her life to pieces if she pretends she might be coming back.
When she leaves, he grabs a beer like any other night and collapses on their couch in defeat. It's easier to fall asleep in the living room, with the futbol game on, as if he's just waiting up for her to unlock the door.
When she leaves, she goes straight to work and crashes in Natasha bunk because Natasha's not there, has her own life, and it's easier to think she can't sleep because of pre-mission nerves than the suffocating knot in her heart.
When she leaves, he stares at her number on his phone, ready to call and grovel at her feet if only his pride would go away, and it's easier to pretend he's not allowed to call her because she's working, not because she doesn't want to see him anymore.
When she leaves, she says he's lazy and he drinks too much and he's too hot headed because it's easier than admitting she's to blame.
When she leaves, he calls her a demon and a hell beast and it's easier for her to be evil than reasonable, and to say that he pushed her to break in the first place.
When she leaves, she still loves him but it's easier to hate him, so she does that instead.