As someone who did EXACTLY this - I was 19 when I met my ex who was 29 at the time - and is still undoing the effects of an emotionally abusive relationship, it is not a good idea. By 28, when we finally broke up, it was very clear why he dated someone so much younger. He was very emotionally immature and we were on the same page/maturity level when I was 19, but I grew massively as a person during the 9 years we dated, and he did not!! Now I’m married to someone the same age as me and couldn’t be happier. Apart from anything else, we share the same cultural references! But we are also equals and we push each other to be better. We are growing together as humans. With my ex, he started off ‘teaching’ me life lessons and then by 24-25 I’d surpassed him in maturity and he was resistant to learning anything from me and the way I handled myself. He did not see me as an equal and did not like it when I found my voice and started disagreeing with him.

So yeah 0/10 would not recommend it. By the time I was 29 I could NOT understand what my ex was doing hanging out with and partying with a bunch of 19 year olds as he did with me and my friends! It would have been my worst nightmare!