Bruno Mars is No. 1 again! It’s getting to be old-hat, or old-fedora, in his case. The crooner notched his fifth No. 1 hit with the heartfelt ballad ‘When I Was Your Man’ — you know, the one that he got all emotional performing on ‘Ellen.’The song, which appears on ‘Unorthodox Jukebox,’ has ascended to the top slot on the Billboard Hot 100 chart. The album’s first single, the infectious, Police-inspired ‘Locked Out of Heaven,’ was No. 1 for six consecutive weeks earlier this year. Mars has grabbed his Numero Unos at the fastest pace since Elvis, so say the bean counters and statisticians at Billboard!