Matthews, who is looking for a lover on Channel 5's reality series The Bachelor, said the Black Swan star has the perfect mix of sense of humour, talent and looks.
"I know it sounds boring, but I'd have to say Mila Kunis [is my fantasy date]. She's got a great sense of humour, Family Guy is one of my favourite shows, and she's so beautiful," Matthews told Digital Spy.
"Beautiful and talented - wow. I'd love to spend some time with Mila, if she's reading."
Commenting on his most romantic gestures, Matthews claimed that he usually prefers "good company" to splashing cash.
"I've done the whole fast car to a helicopter to a Michelin Star restaurant, but it's all a bit fussy I think. I'm more of a Nando's person if I'm being truthful. It's all about the company rather than the OTT gestures," he said.
Watch the trailer for Spencer Matthews's The Bachelor below:
The reality TV star added that his biggest turn-off is "obnoxious people" and girls who "doll themselves up".
"I'm a more natural beauty person rather than fake tan and loads of slap," he said.
The Bachelor starts on Friday (June 29) at 10pm on Channel 5.