Commitment issues :(

Mckenzie

I'm pretty sure I'm in love, I'm 16 and he is 17, both in year 11. I might be crazy in love and over the moon about him. But I have this realistic/depressing view about relationships and love, that it will never last especially young love. I want an actual and long term relationship with him but I'm scared of commitment. What happens when we leave school? We'd be dating for 2 years and if we broke up to go to peruse our dreams I'd be heart broken. I just want to ask if any high school sweetheart have lasted and if anybody has dealt with dating in year 11-12 and then after when they graduated.