Matthew Perry has a crush on Mila Kunis.

The former 'Friends' star admits he is ''sort of fixated'' on the 31-year-old actress, who has six-month-old daughter Wyatt with fiancé Ashton Kutcher, and would love to live in the same house as her.

Asked who his fantasy room-mate is, he said: ''Mila Kunis. I'm sort of fixated on her. What do you mean, why? Because she's cute!''

When informed the 'Jupiter's Ascending' actress is engaged, the 45-year-old star replied: ''She's not available? Well, she's still cute...''

The 'Good Wife' star, who previously dated Julia Roberts, is currently single after splitting from 'Masters of Sex' actress Lizzy Caplan two years ago, but admits he would love to settle down and have a family in the future.

He told the Daily Mail: ''I love children. I have a lot of much younger brothers and sisters so I was always babysitting as a kid. I have godchildren, whom I love, and I look forward to being a father. I think I'll be wonderful at it.''

He jokingly added: ''There's just one important step to be taken first. Like being able to go on a second date ...''