This thread has become fun
As you now know you have been ripped off. I am not being rude but you seriously don't have a clue. But why should you as you stated you are new to this... all of us didn't have a clue at some stage. But please there is no reason to be rude calling us meatheads

I should add I have never injected anything into a vein... again showing your ignorance.
All you need is a good diet. Your mate could have easily put 50 pounds on in a few months but only a small percentage of that would have been muscle. But 120 pounds is nothing so I am sure he looked tonnes better at 170 and it mainly looked like solid gains. 170 pounds is nothing unless you are 4ft tall.
If you want I can help you out with your diet. It's quite easy really... protein throughout the day with a decent amount of carbs and some healthy fats.