Will the loose skin go away?

I lost a lot of weight thru dieting like 60 lbs in 1 year. People tell me I'm skinny and stuff but when I look in the mirror I see a small belly and man-boobs, when i lean down, they sag as well, like a bag of rocks. So I decided to join a gym and have been doing cardio for 1 hour these past 2 weeks, I'll start including weight training eventually, I go 5 times a week. I heard that if you're young your skin should be back to normal in a matter of months, I'm 19 what do you think?

Will the loose skin go away?
You need to consult a personal trainer. Tell the person all this. I'm sure a personal trainer can tell you things to do to tone those areas.