Dating a younger guy?

I just want to know your opinions on dating a guy who's younger than you are. 
My boyfriend is a year younger then me (I'm 14 he's 13) and everyone seems to think that it's weird or not right to date someone who's younger. 
But then again age is just a number and I don't think it should matter if you love each other.
Is anyone currently with a younger guy or dated one in the past? I just don't want to feel alone and know some other people's experiences. ☺️