My life

I'm so stress out, my life isn't going according to the plan.. I've always had everything figure it out, graduate from high school , going to college and study medicine and go live to New York find a job there and starting my life from there. That's right, I don't think my life as started yet because the one and only thing I really have to do is study.. I don't think that's living..
Besides the one and only person I've give myself to is gone and not coming back..ever, that breaks my heart in the most honest way possible, I wasn't expecting that we would be together forever or anything but I wish that we at least would be friends.. I really gave myself to this guy and now we just went to another girl.. was he trustful? I don't know but now is to late..