Obviously, because people don't change.
The same way Beyonce supports assault, drug dealing, and other things Jay Z did in the past just by being with him.
???
She slaps his shoulder and then his face twice, and he yells 'stop, STOP!'
Be honest, if it was the other way around Justin would be considered a woman beater already. But of course that's not the case , because it was Selena hitting him.
And I'm still convinced they've been dating on the low for months. You can't just be friends with an ex if you're both still single, especially not your first love