This wait has no end... First love can't be forget able neither the last one also...lol. But no doubt love is the beautiful truth of life.
Frankly speaking first love is always first one in fact its not related to first love only but you never forget your first friend, school, bike and many more.
In my view i can forget because I've another one now with which i am leading my life happily. so my answer would be obviously YES.
for everyone saying they did forget obviously you didnt if you opened this thread and thought about them, there is just that feeling of never being able to love so hard after your first love, its a feeling and emotion that will never be forgotten. as much as one may try to it just isnt mentally possible. "the first love is the deepest"