Jennifer Aniston "always wanted Brad Pitt to be happy."

The actor's ex-wife has nothing but good feelings towards him after his engagement to Angelina Jolie - after seven years together - was made public last week.

"Jen moved on a long time ago, and she is trying to just focus on her own happiness. Jen is not a bitter person and she has always wanted Brad to be happy," a source told People.com.

Jennifer, 43, and Brad, 48, were married for five years before he met Angelina, 36, on the set of 2005 movie Mr. & Mrs. Smith. Since they split Jennifer has also moved on and is about to celebrate one year with boyfriend Justin Theroux: "Jen spent many happy years with Brad and thinks their divorce was meant to be. She is very happy with Justin - and that's what she is focusing on right now."

Brad and Angelina have yet to set a date for their nuptials.