The `Mamma Mia!` actress - who has recently been linked to sports entrepreneur Franck Raharinosy and real estate executive Andrew Joblon - insists she dedicates all her time to her pet pooch so has no room in her life for romance.
When asked what she is looking for in a man, Amanda told America`s OK! magazine: "Oh, nothing at all right now. My mind is on my dog. He`s my best friend. I love him. I think of him and only him. I don`t like to be out late because I just want to go home to my dog."
Amanda - who recently split from Hollywood hunk Ryan Phillippe - also insists she is just friends with Franck, despite them recently attending the US Open tennis tournament in New York.
She said: "Oh I`m friends with him. He`s a good, smart guy. And he`s fun. He loves tennis, he loves ping-pong. They all do. They`re all really into that sport. It`s fun."
Amanda - who dated her `Mamma Mia!` co-star Dominic Cooper for three years - recently admitted she likes to keep men guessing, and thinks "mystery is really sexy".
She said: "I don`t think men find me irresistible at all. I`ve got a filthy side and a romantic side - I like to keep them guessing.
"Mystery is really sexy. Bad guys also tend to be really self-centred and very fearless - I don`t know why but that is sexy. It shouldn`t be, it`s disgusting."