Jennifer Lopez and ex-boyfriend Casper Smart reunited once again last night and E! has all the details on the former couple’s evening in Hollywood. On Thursday night, the 27-year-old dancer and choreographer attended the Z Zegna and GQ event to celebrate the new Zegna collection at Phillymack Studios. During the bash, Smart hung out with Nick Jonas and his big brother Joe Jonas. A source told E! News of Smart, “He was in a really happy mood. He talked to Nick and Joe and also Reggie Bush.” J.Lo and Smart broke up in June 2014 after about three and a half years together. Last month, a source told E! News that Lopez and Smart were hanging out again but but were in no way getting back together.