I need to change my user name. How do I do that?

The problem that I see, is that people overthink this whole subject. As long as the age gap is not indecent, does it matter. I dated a 43 year old woman when I was 26. If you want to be with that person, it shouldn't matter what the age is, provided it is legal.
Of course, the other way to look at this, is that humans are the only species counts and observes age and time, and adjusts our behaviour accordingly. Cultural perception is a big factor, but as long as the reasons you want to have the relationship are honest, then I really do not see the problem. Just because society tell us we have to go with people of a certain age and sex, don't let a bunch of narrow minded, interfering, judgmental morons tell you what to do!