Danny DeVito's wife left him because he was always allegedly flirting with other women.
'The Lorax' star's 30-year union with Rhea Perlman was said to have been on the rocks for a decade, as she became increasingly upset with his wandering eyes.
A source told RadarOnline.com: ''He may not appear to be a ladies' man, but Danny certainly gets a lot of female attention.
''Danny can be quite the flirt and because of his powerful status in Hollywood, he's not ashamed to abuse his position and chat-up young, aspiring woman looking to make it in the industry.
''Despite his reputation as a lovable, funny guy in movies and on TV, Danny's actually quite the womaniser.
''And, like a lot of red-blooded males, if he sees an attractive girl in a coffee shop or walking down the street, he will give her the eye.
''After years of turning a blind eye to it, Rhea finally snapped. She had enough of his bad boy behaviour and wanted an end to their marriage.
''The break-up has been on the cards for a long time, probably over 10 years, because they haven't been happy for a long, long time.''
Danny and Rhea announced their split yesterday (08.10.12). They have three children together, Lucy Chet, Grace Fan and Jacob Daniel.
Danny - who is five feet tall - has often talked of how he learned to charm women in his bachelor days, saying: ''I learned how to dance real good. I had to, because [girls didn't want to] slow dance [with me].''