Most Helpful Guy
Why worry about the future and ruin the present if he didn't already tell you this isn't working or even hinted at that? With that kind of thinking everyone might as well kill themselves now, they are just going to die sooner or later anyway. Deal with that bridge if you ever come to it. The way most deal with it is go through a depression stage and then just stay single for life or eventually find someone similar if it ended on good terms. For me I just quit doing relationships (last one 12 years ago), the drama, time, and effort isn't worth what I got in return.
Most Helpful Girl
First of all, your relationship COULD last. Of course there are no guarantees, and it's true that you're young, which will make it more challenging to keep your relationship going. But if you two are truly right for each other, things could work out for you. If, on the other hand, your relationship doesn't last, then that probably means that it just wasn't meant to be.
I know how you feel. My first love was intense. I thought he was the only person for me, the only one who could meet my needs and make me happy. So when he broke up with me, I was beyond devastated. I genuinely believed that my life was over and I'd never find happiness again. Fast forward a few years, and I'm with someone even more amazing, who is an even better match for me and makes me even happier. Don't be scared. If this relationship ends, then it will be because it was meant to, and you WILL find someone else.