Is it normal i dont get as many likes on my profile pic on fb but

But my mate who's very obese gets about 80 likes where as I'm slim, fit and blonde and get about 15 likes most! Also her pics aren't great quality either but I noticed my crush who's really attractive liked her picture amd yet she never liked mine. Shes met both of us once!! She just hasn't liked a thing on my fb yet and I had her on fb for maybe 2 months and shes been fb mates with my mate longer. Am I simply over thinking or is there something to this I'm missing ?