I don't normally ask for help but...

>be me
>18
>senior in high school
>love of my life lives in a city three hours away from me
>broke up a year ago around this time because i didn't want to drag her down with her new life by being in a long distance relationship
>lied to her and told her i couldn't do it
>she's had a different boyfriend for about 5 months
>we dated 9 months
>we rarely talk but we're still considered friends and talk naturally when we do talk
>university i want to go to is near her city
>not sure if she'll still has feelings for me
>she took the breakup really hard
>she started cutting again when we broke up but doesn't anymore
>didn't realize the horrible mistake i made till last December
>been sad ever since
>had a casual relationship summer 2015
>lost my virginity to this girl i hardly cared about
>was depressed that whole relationship
>still thinking about her

I'm sorry if the points were confusing or out of order.
That's been my life for a year.
I know I'm just a stupid teenager with a dumb idea that when i go to university that i can meet my love again.
It's not the first time that we broke up and got back together and i don't think this will be any different.
I truly love her and want to marry her one day but i don't know what will happen.
Life had been pointless since i was 15 and she was the best thing to ever happen to me and she's so close but yet so far.
Should i try to get back together with her within the time frame of 3 years?