If I remember correctly mine hurt for only 1-2 days then only for a day or so each time I got them tightened.
At the time I got mine I was told I should only need them for about 2 years. I went in every month to have the rubber bands changed and repositioned, wires tightened and tweeked, and the top plate contracted. 5 years later (and about a month before graduating High school) the doc said I would need another year or so. I went to 2 other orthos and they said the same thing. Since I was 18 already I signed to have them removed. I couldnt imagine going into college with braces and now looking back it was very stupid of me to feel that way. My teeth have regressed a bit but they arent that bad.
I've thought about getting them again to finish the job but was told due to my age it would take 3-4 years of INTENSE manipulation. So I live with some off center bottom teeth.
Moral of the story, yes they hurt, they are a major Pain in the ***. If your girl or guy, or potential girl or guy, has an issue with them then tell them to get lost cause the straight teeth you will have later on in life will make it a bit easier to find the next fish in the sea. Deal with it now, tough it out, you'll be better for it in the end.