Please answer thiss, i need advice, pleasee? i really need answers!?

do you believe in "forgive and forget"...if you really care about someone and you were really close to them but then they did somthing really mean to you, over and voer, but you love them...and you cant stop loveing them even though youve been trying for like 3 months...should i just forgive this guy and forget about everything hes said?? because i care about him so much, does that mean that hes worth taking back even though he never apologized for what he did? and he refuses to apologize? we were best friends and then he decided all of a sudden that he didnt care about me... and said alot of seriously mean stuff about me...should i just forgive him anyways? because i love him?? sorry this is so long but i really appreciate any answers i get, i just need help..