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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
only have eyes for somebody,
have eyes only for somebodybe 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.
Farlex Partner Idioms Dictionary © Farlex 2017