Waxing's probably your best bet actually. Theres electrolysis and laser treatment which are supposed to be permanent but i dont know if that can be done on such large areas. You could try an epilator, it lasts as long as waxing and would be a lot quicker than plucking out each individual hair.
Well of course the hair would grow back. If it bothers you so much shave it. I find that's the most easiest and effective way to remove and keep hair removed.
I would recommend laser if you can afford it and epilation otherwise. The cost of buying an epilator is about £40 and you can use it again and again whenever you like, it's much cheaper and easier than waxing! I think hair on guys is cute though what does your girlfriend think of it?
I already passed puberty (17 now), but for the past year, i notice that hair has been growing on my chest, stomach and basically my upper body... but very slowly.... So in a few years time will I have like a very hairy chest?
Because from far (like when I am swimming), you can see my chest hair.. but if u get up close u can.