since being "In Love", is just another word for lust, you can fall in love at any age.
However, there is not a set age for when you are capable of actual love either, it's all based on a certain level maturity and when you reach that level. Basically, in order to actually love, you have to be mature enough to know what love actually is, and understand it from that perspective, because when it comes down to it, Love is definitely not an emotion, it is a choice.
I think that the first time you fall in love is the only time. Even if it isn't really love, and you break up two weeks later, you were drunk on the love. Young love is the most sincere. The intimacy and the ignorance that it will never end, and when it does, you still have the high because your hormones don't want to let it go. But, then, you might turn 30 and fall in love for real but I'll bet ya anything it won't be nearly as splendiferous.
Coming from a voice of inexperience. Unless you count romance novels experience, in which case I have only read the Twilight series for romance...
i'm 13 and i'm in love.. people say older but it actually doesn't matter, i've been with him for 2 years and he means the world to me, however just because we love each other doesn't mean it will last forever. so keep that in mind. hes 15
I believe anyone can fall in love at any time. Everyone is different and does and goes through things at different points in their lives. I know someone who fell in love at the age of 10 and another girl who fell in love at the age of 15. I know many people that have fallen in love at the same time of their life and at different points in their lives. It all depends on who you are and who the person you love is. The feelings will all come together sooner or later. And they will feel like nothing you have ever felt before.
Love requires no age. Love is an emotion, a feeling, a "bound to happen" type of committed relationship. I know people who have fell in love at the age of 5, and are still together to this day - my grandparents. They are both in their 90's and fell in love with each other at the age(s) of 5 - 7. So, no - there is no required age to be in love. However, knowing the meaning of love is a completely different subject.