Ariana Grande may have already won over Big Sean ‘s heart, but how does the rapper’s mom feel about the “Problem” singer? Mama Big Sean recently joined her son on the road — so when the “Blessings” hitmaker met up with his girlfriend in his hometown of Detroit over the weekend, the matriarch was also on hand to spend some time with the lucky lady that’s dating her child. She’s great,” Big Sean’s mom gushed when the paparazzi caught up with her after the show.