AceShowbiz - Tameka Foster has a "good" co-parenting relationship with Usher. The 53-year-old fashion designer, who has sons Usher V, 16, and Naviyd, 15, with the music star, has maintained a good relationship with Usher since their divorce in 2009.

She told PEOPLE, "It's great. Yeah, everything is great. We're friends and the kids are at an age now where they can kind of say where they want to be as far as, 'Hey I want to be at dad's. I want to go to mom's.' "

Tameka admitted that their co-parenting relationship is "going pretty smoothly." She said, "We have a very open door policy with the boys. We let 'em go where they want to go. Everything is going pretty smoothly."

Usher recently performed the Halftime Show at the Super Bowl in Las Vegas. The 45-year-old star also tied the knot with Jennifer Goicoechea, his longtime girlfriend, on Super Bowl Sunday, February 11, and Tameka subsequently admitted she actually thought that they were already married.

She told TMZ, "I thought he'd been married. I don't know. I stopped keeping up with that type of thing. That's like his second ... third ... I don't know. I don't even keep up with his personal [life]."

Tameka was also full of praise for the music star. She said, "He's a good dad. That's what I care about."

Prior to his Super Bowl performance, Usher opened up about his relationship with Jennifer. He told PEOPLE, "Listen, when you find someone that you know is a great partner, of course it is an honor and a pleasure to be able to share life with someone who wants to share it with you and loves you, who you are."