Should I move away to be with The One?

this is how it go’s really when I was 12 going on 13 I got my 1st b/f ever & had my 1st kiss & everything will we were so happy & in love I mean madly in love & everything we were together for 4 1/2 years I think we would still be together to this day but my family moved & then his family moved & will its almost been a year from when we broke up & moved away from each other with are familys but I went back to my old town this summer to see my friends & family there & to see him bc about 2 months ago he started called me 24-7 agn & me & him talking all the time & he moved have to are old town & all & when I went there we hung out & sent the hole time I was there together me huged & madout agn & everythung & you can tell all are feelings for each other were still there but then I had to come back home bc this is my last year of high school but it sucks bc I want to be with him so bad. he told me I could go live with him bc he has his own place & that I can finsh school up there with all my friends & him witch I like that idea but the thing is my dad is sick & all the docters keep saying he might die & I want to spend all the time I can with my dad but I really love this Guy & hes my everything always has been & he even asked me to be with him & to marry him but I don’t know what to do please someone help me asap