Britney Spears' upcoming memoir seems to reveal a lot about Justin Timberlake, but the NSYNC alum is apparently trying to let bygones be bygones.

"Justin is focused on his family and not worrying about Britney's memoir," a source told Entertainment Tonight.

"Over the past few years, Justin has tried to support Britney from afar; they dated a long time ago, but he still respects her. Justin and Jessica just want everyone to grow and evolve, rather than keep bringing up the past."

Timberlake is married to Jessica Biel and has two sons with her, Cyrus, 8, and Phineas, 2.

This week, People published an advance excerpt from Spears' book, The Woman in Me, in which the "Toxic" singer revealed that she had an abortion during her three-year relationship with Timberlake, but would not have had one if she did not feel he was ready to be a father would have, she said.

"Justin was definitely not happy with the pregnancy. He said we were not ready to have a baby, that we were too young," Spears wrote

.

"If it had been left to me alone, I never would have done it. And yet, Justin was convinced he didn't want to be a father."

After this source told Entertainment Tonight, TMZ also broke the news that Spears said in her memoir that Timberlake cheated on her with the celebrity. It remains to be seen how the Friends With Benefits actor reacted to the allegations, but I'm thinking, "Not good?" I'll have to think.