Russell Brand thinks he and Katy Perry were "incompatible" and believes couples should share the same interests.
The east London comic split from the Teenage Dream hitmaker last December after just 14 months of marriage and he thinks they were just too different for their relationship to work.
He said: "Sometimes it goes well, sometimes it doesn't.
"But if you sort of sense there's an incompatibility, then in any relationship, regardless of the status of the individual, it is kind of best to go separate ways."
The Arthur star - who has been liked to several women, including Spice Girls singer Geri Halliwell, since splitting from Katy - believes it is very important for couples to share interests.
He told Australia's 60 Minutes: "I think if you're someone who is really into mountain biking, it would be good to go out with someone else who's into mountain biking, and if you're really into Eastern mysticism, go out with someone else who's into Eastern mysticism.
"I think if you're a devoted tennis professional and you get married to a crystal meth addict, you might have trouble. I've been in a lot of trouble!"
Russell and Katy's divorce was finalised in July.