Wiktionary
vb. (context transitive English) to end a romantic/sexual relationship with.
Usage examples of "throw over".
Some of the drivers had a waterproof cover to throw over, which was a fine thing.
They had learnt from Pitt while yet in Port Royal of their Captain's danger, and whilst as ready as he to throw over the King's service which had been thrust upon them, yet they resented the manner in which this had been rendered necessary, and they marvelled now at Blood's restraint where Bishop was concerned.
To throw over Borja would be to throw over our oars as well as the mast that Borja himself demolished.
Cast of fine bell bronze, they throw over nine full pounds of canister or grape, for all that the tube is a bare three feet long and weighs only a bit over fifteen stone.
The People aren't camped more than a dart's throw over that hill up there.