Long distance relationship

So I’m 15 and so is my boyfriend of 2 months I know we r young but I have a feeling about him and everyone I mean everyone loves him he’s just everything that I’m looking for. But starting January 2019 we will be doing long distance and if we last it will be for atleast 3 years and we will be over 1000km or 500 miles from eachother and idk what to do I already mis him and we haven’t seen eachother for 3 weeks. Btw we will see eachother when we come home as we are both going to boarding school