Ahh, I just typed up a whole reply to your comment and lost it! So I am going to try again.
But why does Wesley need a light at the end of the tunnel? Why doesn't Gunn?
We don't see a drastic transformation of Gunn. His hardships and growth, though real, are minuscule and not a major plot point like Wesley's -- from the alienation and abandonment he faces in S3 to the shaky re-admittance into the gang in S4, which all the while illustrates some dark moments where the viewer is unsure of his alliance. Despite this, Wesley's love towards Fred still shines and his motives are clear when it comes to her; we even see that he puts aside differences and helps the gang in The Price, where Wesley informs Gunn of the antidote because Fred is infected.
Fred seems to be his priority and even the reasoning for some of Wesley's actions (such as the example above, as well as shooting his "father," and even dismissing Lilah in a sexual mockery of Fred in a innocent schoolgirl outfit and glasses. At this point, I guess it's appropriate for me to add that I did actually love Wesley/Lilah!)
Also, this makes Fred less of a character, less of a real woman, if her only role is to serve as a "Florence Nightingale" to a man.
Hmm, I have never even thought of this. Fred, to me, is an example of a strong character, female or otherwise. Examples? I may be missing your reference of "Florence Nightingale" entirely, though!
🙂
(particularly as her entire run on the show was defined by whom she was in love with--first Angel, then Gunn, then Wesley).
This is may be true to extent but in that way, the same could definitely be said for a lot of the characters in the Buffyverse (and even in real life.)
It was also really annoying how she turned to Wesley for romance after breaking it off with Gunn
Well, they did kiss.