It's a cut on Michael Morris' Eriu's Child, sung first in Gaelic and then in English -- It's really newagey, but the Gaelic lyrics are lovely and the rest can be adapted to something more palatable.

English:
My love, you are forever; my friend, you are forever (x2)
My friend and treasure are you; my friend and sweetheart are you
My friend and own are you; my love and [?] are you
My friend and darling are you; my love and [same word ?] are you;
My love and sweetheart are you; my love and sweetheart are you

Gaelic?