My metabolism is crazy.. Hell, I'm trying to gain some weight(not exactly fat), but I've been stuck at around 110 for two years
That's why skinny people actually have a smaller life span than overweight people. They go on loving up their bodies and think skinny = healthy, people assume being overweight is an indication of being unhealthy, but really you can be chubby and be in perfect health, just like you can be skinny and be in horrible shape.
I've been doing biology on this recently and know exactly how not to be fat: It's all about the HDLs and LDLs (High-density and low-density lipoprotein) Basicly LDLs make you fat and unhealthy (Prone to heart diease etc.) HDLs make you fit and healthy. (Olive oil, natural oils, Lentils, Fish, Walnuts) There is more to it than that but I can't remember exactly. Combine HDLs with a fair bit of exercise/sleep and you'll be very healthy and slimmer.
Every credible scientist in the world would bitch slap you if they saw that.