Less than a month after separating from husband Carey Hart, Pink got cozy with a new guy. The "Stupid Girls" singer spent March 3 celebrating her newfound single status at the Key Club in West Hollywood. Pink really got the party started when she jumped on stage to join rockers Metal Skool, where according to a witness, "she sang laying on the floor because she seemed too drunk to stand." That same night, Pink was spotted getting quite cozy with a mystery man in the club’s VIP area. "They were making out and looking very together," the witness adds. Now, In Touch can reveal that Pink's frisky friend is rocker Butch Walker of the Butch Walker & the Let’s-Go-Out-Tonites! band. He's also a producer, songwriter and former judge on Rock Star Supernova. It turns out Butch has a history with the rocker: He's written songs for her previous albums.