Singer Beyonc Knowles has seemingly hinted in her new album "Lemonade" that her husband and rapper Jay Z has cheated on her.The 34-year-old singer has seemingly hit out at her husband -- whom she married in 2009 and with whom she has four-year-old daughter Blue Ivy -- in her new video "Lemonade" for allegedly committing an adultery offence, reports femalefirst.co.uk. In the clip, which sees the couple cuddling up to one another, she sings: "Looking at my watch he should have been home. I regret the day I put that ring on". To add even more fuel to the fire, Knowles sang: "My daddy warned me about men like you cause every promise, don39t work out that way. Nothing seems to hurt like the smile on your face", before hinting that the 46-year-old rapper had got down and dirty with a mystery woman called Becky with "good hair" behind her back.