The ex-Made in Chelsea star leads the second UK series of The Bachelor and will have to choose between 24 women by the end of the show.
© Channel 5
"I'm not going to be that guy who says looks aren't important - they are," Matthews told Heat.
"But she shouldn't take herself too serious, not change around me, and also know how to have a good time."
He claimed that the task of picking one woman was "quite daunting", adding: "You need to be constantly on form.
"Dating one girl is hard enough, so spreading your time evenly and being yourself with 24 people is quite difficult.
"I was nervous about living up to their expectations of who they wanted at the end of the red carpet, too."
Matthews had to axe nine girls from the original lineup on the opening episode of the show.
The Bachelor series 2 - the girls: photo gallery:
Aisha - (26) - This beauty queen has won two titles in the Prestigious Miss India UK awards. She wants a man who can match up with her high expectations.
1 of 24
Copyright: Channel 5
Watch the trailer for The Bachelor series two below:The Bachelor starts this Friday (June 29) at 10pm on Channel 5.
