I've noticed that I as I get closer to my 30's that I start to get attention from the older and younger ladies as well. I think if you're a guy who maintains himself properly (i.e. dresses well, keeps in general shape, and likes to smile and talk), you should have no problem being popular with girls of any age-range.
You need to let girls know your not that guy, if a girl wants to talk about her guy problems with you tell her to go find a gay best friend to hang out with.
I use to be that guy too, until one day I realized how much of an idiot I was, and I said "Screw this." And the next girl that came to me whine about their problems to me, instead of "What's wrong?" It was...