It's officially splitsville for Johnny Manziel and Bre Tiesi ... 'cause the model has filed for divorce, TMZ Sports has learned.
We knew this was coming ... Bre and Johnny broke up earlier this year after only a year of marriage.
Tiesi called Manziel out for allegedly cheating on her ... saying, "vows were broken."
Bre filed docs Wednesday morning in Los Angeles ... which starts the process of officially ending the marriage.
Johnny and Bre started dating in 2016 .