What? but isnt Twilight in her late 40s and cheerilee in her early 14?
Actually, their ages are never explicitly stated. Odds are all of the Mane 6 are adults.
Again, we don't know for should how old Big Mac and Cheerilee are. Given that Cheerilee appeared as a filly in Rarity's cutie mark story, she's probably the same age as her.
BUT cheerilee was like 20 years old in the 1980s so that means shes like 40!!! and rarity is too i suppose... so the BABY dragon spike has a crush on FOURTY year old rarity...wow. creepy.
Actually it's the other way around
Well, people ship Big Mac with both her and Fluttershy so...
Because people don't really think about age.... Yeah.