It's normal, no one likes eating the same things every day, it's human nature to want to eat what we want, not what we think we have to have. For me personally, me dieting leads me to an urge to eat complete and utter garbage, you know, the stuff that tastes really good.... but.... also has a nice 29000 grams of fat, 4500 carbs, 99000 calories total, lol. Fake numbers, but you get the point. I think you'll be ok. IMO that is the reason we have cheat days, so we can eat something that is different, that you want to eat, although it might not necessarily (spelling?) be good for you. Just stick with it, with a good diet and some dedication, you will make gains, like you said. But a cheat day here and there wont hurt anything. <- I also realize saying that may be untrue for some people, but if you don't gain 20 pounds from eating some french fries, I think you'll be ok.
Also I forgot to mention, on your "cheat days," try and keep it reasonable and avoid the whole binge eating scene. Good luck.