The `Shame` actor - who was most recently romantically linked to Zoe Kravitz - likes the idea of settling down and raising a family but doesn`t think it would be fair on a partner to have to put up with the demands of his job. He told Britain`s GQ magazine: "I`m quite a romantic person and I love the idea of having a family. But I`d have to take a step back out of this. "It`s not fair on somebody to be waiting for you. You spend long periods of time apart and then when I am here, I`m working. "I find it difficult to do both and to give that other person the right amount of attention and time they deserve." The 30-year-old star says he is most attracted to women who are confident and intelligent. Asked what he looks for in a woman, he said: "Intelligence, self-confidence in one`s own skin. If a girl is slightly overweight or, you know, if she`s comfortable in herself, living life the way she wants to live it, I find that sexy and attractive. "If somebody is the perfect mould, but she`s not enjoying herself, then I find it sad and unsexy."