See an 18y/o is still the same person they were the months prior as 17. I saw 18yos as babies at 20 so I couldn't imagine being 23 and feeling okay w dating one. If the age gap was with both in their 20s it wouldn't feel off imo
Im biased tho, bc ive around that age gap w my sibling and can see first hand in how different points in life we are reply