It took a lifetime to find you And now I want you to stay Oh, I don't mind you can do anything You can love me night and day When you are there Just to know you care Brightens up a starless night Your smile is all that I That I live for And I don't know What I did before Your smile Your smile Makes it all worthwhile Then you changed it around Don't let your little baby down You were the only one Thought I had you on the run But now I guess it's me Begging you- begging you When you are there Just to know you care Brightens up a starless night Your smile is all that I That I live for And I don't know What I did before Your smile Your smile Makes it all worthwhile Then you changed it around Don't let your little baby down You were the only one Thought I had you on the run But now I guess it's me Begging you- begging you

This song reminds me of Paul and Linda because its sort of a love song, and both of them have great smiles, and it is just one of those songs that are Paul and Lin type.
This was a suggestion of Laura. :-)