Looks like Ariana Grande's ex-boyfriend, Jai Brooks, is a pro at talking trash - or should we say, tweeting trash.

Jai, a member of YouTube comedy group 'The Janoskians' took to twitter accusing Ariana of cheating on him with The Wanted's, Nathan Sykes. 

The LENGTHY (Like, real, real lengthy) rant was posted on Monday, October 7th.

Also, found on his twitter was a text message that was sent to Ariana, which leave us confused about if he is mad or trying to get her back?

You tell us….