Jennifer Lopez's ex-fiancé Alex Rodriguez made an unexpected appearance in NYC following her return from her second honeymoon with Ben Affleck.READ: Ben Affleck reveals real reason he and Jennifer Lopez called off 2004 weddingA-Rod was spotted attending a Bad Bunny show at Yankee Stadium in August, according to Deux Moi, just days after Jennifer and Ben returned to LA from Lake Como, Italy, following their three-day wedding extravaganza last month.WATCH: Jennifer Lopez and Ben Affleck's love storyThe former baseball star has remained tight-lipped about Jennifer's wedding to Ben, but he did share a rather telling post on Instagram the same day the couple tied the knot for a second time.Alex shared a snapshot showing him dressed all in denim, teamed with brown shoes and a matching belt.