I m a Hindu girl in love with a Muslim boy since 2yrs.?

These 2yrs he has made alot of promises to me,in fct he promised he wud mary me wteva hapens.I 2 am ready to cnvert n do wtevr needed ofr our being togethr.Regarding his parents,he sd he wud mak them agree anyhow.I knw my dad who's strictly agnst intercaste mariages.I love the guy too much to let him go n got rdy 4evrything tht wud b neded fr our being togethr,2 leave my faith,my relatives family n evrything.Upon teling his parents wen he ws stuborn,his mom agreed bt his dad wsn't rdy at all bt later gav n xcuse tht if nly my parents agree we wud get maried.nw dis is almst imposible becos i knw my dad..once i tell him this he wud stop my stdies n get me maried 2 any paser by.bt i dnt wnt this 2 tht i dnt tel thm anyhting n whole lyf repent over this tht if nly i had told them it wud hv made a difrence..besides,i had decided if i mary i uwd mary nly this guy bt wen i tokd 2ma mum on ths she sd me strait on my fce tht i cnt remain unmaried whle lyf at any cost.Infct she threatend me,either her life or me nt being unmaried,wichevr i want i cn chose.i ws dumbstruck..Please do help me..I dnt wana liv this way n i hv gt my boards cming too..m just al tensed up..pls do help..sugest someway thru wich we cn b2gethr..the guy wud mary me nly if his parents agred..