For a couple to stay forever they must consistently communicate to each other. They must know how to keep the fire burning. Never get afraid of being hurt. Love is a game. Play it better.
Find a partner who can stay at your side even in your worst day. Those are the one who are for keeps.
It is normal for a couple to argue now and then, it is how they will prove to each other how strong their foundation is. Being able to survive test of relationship makes you stronger.