Language / Word in Polish equivalent to romantic love? For wedding gift picture frame [4]

Greetings,
I'm hoping you can help! My husband's boss recently married a lovely Polish woman and we recently attended their destination wedding. I wanted to make them a picture frame that contains the word "love" or some term of endearment equivalent to romantic love in both English and Polish. Do you have any suggestions on what I might be able to use? I don't want to use google translate and end up using a word that means only friendship.

Thank you very much for your suggestions!!