My life please help! i dnt know wht to do anymore!!?

i wish i knew wht to do. everybody is telling me everything but who do i believe. i dnt know whts going on and i hate it. y cant sombody just give me an anwser tht i could rely on. everything is so hard and everything is so complicated i just want to give up. giving up seems like the only option i have left because everything i turn to always lets me down!! i hate feeling sorry for myself but it seems like thts the only thing left to do. how do i know if he really is cheating on me??