Age Gap

So I’m only 18 and my Boyfriend is 37 so there’s a 19 year age gap between us which is pretty big but we’ve been together for at least 9 months and we’re very happy together, I never think about the age gap and we get on really well. We’ve had a lot of ups and downs with my family about it and I was just wondering if there’s anyone else out there who’s had a similar experience?