Adrienne Bailon may be a single lady, but that doesn't mean she's rekindling her relationship with former flame Rob Kardashian . The 31-year-old singer, who revealed in September that she and longtime boyfriend Lenny Santiago had called off their engagement, addressed the recent speculation surrounding her dating life, and more specifically, the rumors claiming she and the 28-year-old Keeping Up With the Kardashians star have gotten back together.