"How Deep Is Your Love" from Saturday Night Fever [The Original Movie Soundtrack] -- is by far, one of my favorite Bee Gees love songs. It is perhaps, one of the most time-less, and cherished (by most people) Bee Gees hit, ever!
There is just something about the lyrics and harmony of the song, that makes it so classically beautiful. The finely tuned song, gives me goose-bumps, every-time I hear it. This is due to the fact that the brothers who layed it out, did so, in such a harmonious and well-crafted way. That's just the way the Bee Gees rolled. Who would not agree?