updated 09/15/2011 AT 12:30 PM ET
•originally published 09/15/2011 AT 12:25 AM ET
It looks like Mark Ballas and Pia Toscano have had their last dance.
Ballas, 25, and Toscano, 22, who started stepping out in April, agreed to go their separate ways after a heart-to-heart talk this week about their demanding careers.
“They both decided with everything going on that they couldn’t give each other what would be fair,” says the source. “They mutually decided this.”