Lonelyness and boredome...?

ive never had many freinds but the ones i do jave are awesome, i have a boy freind and a sister theyre all great i love my mom but when i see mu dad i just puts me down the secon they leave or i have nothing to do i get deppressed lonely and bored and i cant help it i refuse to take depression or sleeping pills or any other kind of non life saving medications how come when im with theese peple i feel great but once im alone i feel terrivle again i love to reed but i can only read so many books in a day ( usually 3max 1/2 of 1 min) i love video games and movies are ok but i hate exercising im supper lazy im fit and ill walk around if i have to but i think me not liking exercise is part of the lonelyness and boredome ?? any ideas on what i can do to not be bored