With me it doesn't matter so much about the guys age (unless he's underage), but more so if I find him mentally and physically attractive and how he treats me.
My current boyfriend has recently turned 18 and I am 19, 20 in October.
I don't like him just because of his age, it's because I find him cute and he is nice toward me, caring, has a good sense of humour, seems to learn from his mistakes, is respectful of my beliefs and seems to be honest and loyal from what I can tell.
Some women may have a preference for younger or older guys, but personally, I have liked guys both older and younger than myself, as well as guys about the same age.
As I say, age doesn't matter too much to me so long as no one is underage and if they are, just don't do anything inappropriate with them.
I also have friends who have liked guys both older and younger than them too. One of my friends is actually engaged to a guy 2 years younger than herself.
It's hard to describe what "usual" is. From my limited experience (flawed sample, to be taken with a grain of salt), it's actually considerably more common for older women to date younger men.
I see that a lot in Japan where women past the age of 30 start dating younger (sometimes considerably) boyfriends. It is much rarer to see, for example, a 25-year old girl date a 19-year old young man than it is to actually see a 35-year old woman date a 19-year old young man here.
Why exactly, I don't know. I don't want to offend or risk inaccuracy by guessing. And again this is just from my narrow and limited life experience.
Yes that is usual but there are so many exceptions to that. I'll give you an example me. I was in graduate school and all the students were older than me I felt like a kid. So there I am 23 years old I start dating the guys on the swim team undergraduates. It was fantastic
I think it's all about the guy their with. Look how many female teachers are getting caught with students? When I was 14 I was dating a 22 year old. She thought I was 18, but I didn't tell her that. She dumped me once she found out. Between 17 and 22 I dated a lot of older women. I was in the Army then and for me, the skys the limit. Even my exwife is 8 years older than me. It's what you portray within yourself, towards them.