MANHATTAN, New York (X17online) - Bristol Palin has reunited with Levi Johnston to raise their 1-year old son Tripp, according to Good Morning America.

It's been more than a year since the two separated, and now she says they "have begun a new chapter of cooperation."

Palin tells GMA:

"I am doing my best to raise a happy, active and healthy boy. I believe that wherever possible, if the parents can cooperate and co-parent in a positive way, the child will benefit. Levi and I are turning a new page here as co-parents to this wonderful boy and putting aside the past because doing so is in Tripp's best interest."

Palin is now a spokesperson for teen abstinence, and Johnston is reportedly developing a reality show.

Photo courtesy: ABC