Since I am in my early 20's, I don't really like the idea of dating a much younger man. If he can't get into the bars and clubs I go to, then it's not going to work out very well for us. (My roomie is dating someone who just turned 20...she's 22 and it causes all kinds of problems). However, I would date a man up to the age of 28. I think I just like the 5 years apart thing!
My current boyfriend is 3 months younger than me to the date and I love it!