Should i end it and save myself the heartache or see how things turn out?

ive been going out with this guy for 3 months ( not that long) and soon he'll be moving away. He says that we'll speak and see each other and continue the relationship, but i don't see this happening at all. I know that in the long run we'll breakup and ill get really upset as i really love him. Should i just end it now to protect myself from the heartache? Or should i just see how things turn out? PLEASE HELP!! x