Palin told People Magazine that she had been played by Johnston and he was obsessed with the limelight.
Johnston commented on the breakup while walking the red carpet with singer Brittani Senser.
"When I'm in town, we hang out. We're doing great. I talk to her every day. We keep in touch. So, even with us broken off, you know, it's like we're together," Johnston said. "We found a way to kind of work with each other. Things are going good."
When asked what caused the breakup Johnston refused to answer, but he said media pressure played a major role.