I need help, please no hate!
I'm 12 yrs. old, I'm bestfriends with a 14 yo girl and a 16 yo boy. The boy is the girls brother, I look as old as them even tho I'm only 12 [ height, weight, etc ]. But I like/love? her brother, I tease him,[not sexually] and we talk/text All the time. I can never stop thinking about him, I've even had a few sexual fantasies, and even unsexual fantasies [ Us having kids, Being married, Just hangin' out when we older] about him. No one knows I like him, but my family thinks I do, but I denie it to anyone and everyone who asks, cause I don't think he likes me that way. Than I have to remind myself how to most love does know an age, because I'm 12 and he's turning 17 later this year  but he's sixteen [almost 17] and I turned 12 a couple months ago. I dont want to tell him because we are bffs and this could potentially ruin our friendship, and his sister is my best friend so it could ruin that too, and no one in my family would agree with the relationship if we ever got into one together. Please help, I honestly have no idea what to do, and I'm a tomboy so it's hard for me to talk to anyone [considering me and my mother can't stand eachother, and I grew up without a dad] and no I do not have daddy issues. But please help me, I know its socially wrong for that age gap but please no hate and please help me?!