Although Vice President Joe Biden for months weighed whether to launch a third bid for the presidency, Politico reported Thursday Biden knew he wanted Sen. Elizabeth Warren (D-MA) as his running mate from the get-go.

Biden mentioned Warren as his potential vice president pick during his earliest strategy meetings with top staffers, according to the site, which cited anonymous sources familiar with the situation.

Warren was “noncommittal” but “not displeased” when Biden told her he wanted her on a possible ticket, a person briefed on their meeting told Politico.

The Vice President also reportedly believes Warren would be the best bet for Democratic frontrunner Hillary Clinton’s running mate.

Biden said in an interview this week he would’ve been the “best President” had he decided to run.