I have crossed the rubicon - You've made a choice so final it's like you've been permanen

You've made a choice so final it's like you've been permanently glued to a couch.

He broke up with his girlfriend and immediately dated his best friend. I have crossed the rubicon.

She started a TikTok dance challenge and won't stop. I have crossed the rubicon.

He sold his car to buy a pet lizard. I have crossed the rubicon.