Yeah that's a bit old.
For example I'm fifteen and my boyfriend is almost eighteen and we've been together for many months. If it's love, it's love. And there's nothing you can do about it, but enjoy it and be happy.
When I was 17, I began dating a girl who was 13, almost 14. We dated for about 4.5 years before getting married. We will be celebrating our 50th wedding next January. And when my daughter was almost 14, i reflected and wondered "what in the world were my future in-laws thinking letting her go out with me?