Jennifer Garner is not concerned about her ex-husband Ben Affleck's recent reconnection with another famous Jennifer in his life — Jennifer Lopez. A source tells ET, «Jen isn't bothered by Ben hanging out with J.Lo or anyone else. She wants what is best for Ben.» The 49-year-old mother of three who shares her kids with the star has other priorities when it comes to her ex. «What matters most to her is Ben being a great dad,» the source continues.