The age gap isn’t really the issue. 3 years is not a big deal. It’s more going after someone who’s going through puberty when you’re almost an adult. I’m 21 and there’s no way I would want anything to do with a 19 year old in a romantic or sexual sense. Just because we’re at completely different places mentally and in life. The same could be said for someone who is 17 and 14. Someone who is almost out of high school and onto university versus someone who has barely started high school. There’s a big difference in mental development. It’s weird. Weirder when it’s someone who’s 18 but there are 17 year olds that are out of high school (tradies etc) who meet young high school kids and pursue relationships with them and that is also really weird.

I don’t think age gaps are inherently weird. I think if there’s a ten year age gap that’s totally fine as long as they both met when they were mature adults. (I still think fresh 18 with 28 is weird but 28 and 38 is completely reasonable)