I guess that's it - A word so awkward it makes every sentence it’s in feel like

A word so awkward it makes every sentence it’s in feel like it was written by someone who just woke up and had no idea what they were doing.

'I guess that's it' when he said it to his crush in front of everyone.

'I guess that's it' when he said it to his mom after she asked how his day went.

'I guess that's it' when he said it to his best friend and ruined their friendship forever.