He hated the fact that you had thrown what he called a "fit." He missed your birthday doing something for his best friend, she was in a bad mood and he needed to be there for her. So yes he spent the night at her home. When he returned back to the apartment the two of you shared he found that you had moved out, everything was gone. Even the baby the two of you shared. He didn't care that you left, no- He didn't even care that you took the baby. He just thought you needed to calm down, that you were overreacting. But what he did care about was the fact that today was his other child hood friends party, he didn't want to look bad. He made you come with him, bringing the baby along with you.
He didn't talk the whole car ride, neither did you, he couldn't even muster an answer to where it all went wrong. When entering the party, he noticed you didn't even bother engaging with his friends anymore. You'd rather stare at the baby and scroll on social media than engage and have a conversion. Beside him, sitting was his best friend Mary. The woman he treated better than you, the woman he treated like the love of his life whispered things in his ear. Making him chuckle. Everyone could tell the tension between the three of you.
That's when everything started, Mary spoke out loud, telling Henry to apologize since you his girlfriend still seemed angry about something. Henry scoffed and replied, "She'll get over it."
His male friend who the party was for sat there, with furrowed eyebrows, saying. "That's not right man."