only have eyes for somebody

only have eyes for (one)

To be romantically interested in or devoted to only one person. I know you're a little worried about me being around all of these beautiful women, but I only have eyes for you, my darling. You can tell by the way she looks at him that Beth only has eyes for Trent.
See also: eye, have

only have eyes for somebody

,

have eyes only for somebody

be interested in, or in love with a particular person and nobody else: John tried to get Helen to go out with him, but she only had eyes for Chris.
See also: eye, have, somebody