London: Hollywood superstar Leonardo DiCaprio says his ideal woman is his mother because she is perfect in every way.

The 37-year-old actor, who is reportedly dating model Erin Heatherton, said his girlfriend will have a lot to live up to because he compares her to his mother, Irmelin, as reported.

"My mother is the centre of my life. To have a woman like that in your life, who is strong, who'll be honest with you about who you are... that's something I treasure. And it's something I look for in a woman," DiCaprio said.

The actor, who has previously dated models Gisele Bundchen and Bar Refaeli, also said he is unsure if he will ever marry because seeing other people's failed unions has put him off tying the knot.

"I don't know whether I'll ever get married. I've seen too many supposedly happy marriages go down. I've been as shocked as anyone. No one can look at the marriages of other people and make a judgement. I don't know the private lives of the actors I work with. I just know if they are good actors or good directors," he said.