What age is too young to get married in your opinion?

I want to eventually marry my boyfriend. He’s 20, I’m 19. I know we are both fairly young. I know that one day he will propose to me. I know he wants to marry me; although he hasn’t explicitly said it, he hints at it very often. I know for a fact that I will be marrying this man, unless God has other plans for me. I’ve been told by my friends and coworkers that marrying before 20 is a very bad idea. In my opinion, the whole point of marriage is to struggle, grow old with one another, and foster a natural form of love you can teach your children and grandchildren. Love is different for each relationship. Love is really immeasurable from a superficial perspective. So why should age be the dictator of marriage if two people can see themselves spending the rest of their lives with one another?
What age is too young to get married in your opinion?
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