§ Of Beren and Lúthien The Silmarillion

Now Beren and Lúthien Tinúviel went free again and together walked through the woods renewing for a time their joy; and though winter came it hurt them not, for flowers lingered where Lúthien went, and the birds sang beneath the snow clad hills. But Huan being faithful went back to Celegorm his master; yet their love was less than before.