But insiders say a recent charity trip to Africa led to the split.'Mischa and Taylor's romance worked because they spent so much time apart,' a source tells In Touch.'He'd be on tour or she'd be working in Europe and they talked over the phone or e-mail.
'They fought almost every day on the trip. She broke up with him just a few days after they returned to LA.'Mischa, 22, is an ambassador for Save The Children and the One Water campaign that brings water to remote locations in Africa.She previously dated musician Cisco Adler.