Katie Holmes, who recently filed for divorce from Tom Cruise, has been relying on her “solid friend” and former flame Chris Klein for support lately. Holmes and Klein were engaged before the actress got together with ‘Top Gun’ star. “Chris has been a huge source of support. They’ve stayed on good terms since they broke up and he’s one of Katie’s few really solid friends,” News quoted an insider as telling Heat magazine. The 33-year-old star and the ‘American Pie’ actor stayed in touch after their break-up and she is said to feel indebted to him following his recent help. “Because of Tom she was really isolated. She only hung out with people who Tom and the [Scientology] Church had pre-approved, so she hardly has any friends,” the source revealed. “Having Chris as a shoulder to cry on has been a huge help for Katie. It wouldn’t surprise anyone if they became more than just friends,” the insider added,” the insider added.