Britney Spears has looked back on her failed marriage to Sam Asghari and admitted love isn’t all “peaches and cream”. The 42-year-old pop superstar split from second husband Sam last year after just 14 months of marriage and she has admitted it’s tough to look back on the relationship, but she wants to examine her past so she doesn’t “make the same mistakes” all over again as she looks to the future. She shared a video on Instagram of Sam twirling her around, and she wrote: “The time he picked me up … It’s weird cause there are always strange turns for relationships with friends family or your…