Steve was the worst. He didn't know what do with himself. He rarely spoke to his family save for Peter and Caroline. And even then he was brief and cold.
Part of him wanted to go back to the tower and just ask Tony why. Why would he cheat? Why would he tear their family apart? Why would he not care about what he did?
The soldier brought Peter to school then Caroline to day care. Neither of them should have to see Steve cry or rip apart the punching bags at SHIELD. He took more missions (like Clint and Natasha) and avoided all Avenger meetings. It got to a point where they didn't even have them anymore because no one showed up.
Steve couldn't even feel the pain of it anymore. He was absolutely numb.
And he didn't care.
Not one bit.