In real life? Probably. It's not a given that it won't work, but it is an issue. But a lot of couples have issues and they can break them apart at some point, doesn't mean that you shouldn't try it anyway. Be together as long as you both love and enjoy it. But ending things before theyeven started just because you think it won't last is a waste. You never know :) Take the chance!
An 18 year gap is huge. In the real world, it would be incredibly hard for an 18 yo and a 38 yo to relate. They're at two very different points in life and have very few experiences in common. Can it work? Yes, but very rarely at that specific age. 18 is barely an adult and I can't imagine a relationship at that age with someone two decades older would be balanced.
Yes, totally a rare thing. I usually won't work to easy, sinceas you said they are at completely different points of life, but with some it might and can :) But that's insanely rare I guess. My aunt was together with a guy 20 years younger than she was. And 3 years younger than I was xD It worked alright I'd say, but only for a year. But hey, that year was nice for them and it's more than others manage sometimes :p
Am I the only one who thinks that the age gap is too big between them?