Diane Keaton says Morgan Freeman is a great kisser.

The 'Life Itself' actress, who is currently single and has adopted children Duke, 13, and Dexter, 18, admits she really enjoyed shooting romantic scenes with her co-star on the set of their upcoming drama.

The 68-year-old Oscar-winning star said: ''His lips were just so luscious. You just put your lips up against him, and you just squeezed in, and it felt gooey and good. So I liked that.''

Diane, who previously dated Warren Beatty, Woody Allen and Jack Nicholson, hopes to lock lips with lots more Hollywood heartthrobs in the future, including Bradley Cooper and comedian Louis C.K.

She said: ''What I've decided is that I would like as my goal in life is to be the woman in films who has had the most kisses with men on film, and I'm thinking that maybe 50 is what I'm going for.''

She jokingly added: ''Louis C.K. - that's the one I want right now.''

Diane has kissed 18 of her co-stars onscreen throughout her career to date, but was surprised to discover Michael Douglas, who is married to Catherine Zeta-Jones, had an aggressive tongue when they were filming their upcoming movie, 'And So It Goes,' recently.

She told 'The Ellen DeGeneres Show': ''What was exciting about him he was sort of like a pit bull. He kind of attacked me...I was acting sort of cautious, but in my heart of hearts, I felt the same about him and I wanted to just get right with it.

''So it worked out very well for the scene, but I enjoyed it.''

Asked if she'd ever kissed him before, she said: ''No, never. Never even touched Michael. Never met him.''