When you were young and on your own
Recalling your past when you were alone and independent

how did it feel to be alone?
Wondering how it felt like to be alone without someone to share your life with

I was always thinking games that I was playing
Being preoccupied with the things you do to make the most out of your time

trying to make the best of my time
Striving to utilize your time wisely and practically

But only love can break your heart
Love is the only thing that has the power to deeply hurt and wound us.

try to be sure right from the start
You need to be cautious and aware before delving into a romantic relationship

Yes, only love can break your heart
Reasserting the idea that love can be emotionally damaging

but if your world should fall apart
If everything else in life fails or falls apart, love can be the only thing left to give you solace

I have a friend I've never seen
Referring to a friend you haven't met personally, possibly met only online.

He hides his head inside a dream
The friend may be isolating himself from the real world by hiding in his own dreams and imagination

Someone should call him and see if he can come out
Requesting someone to reach out to the friend in question to check on him

Try to lose the gang that he's found
Encouraging the friend to break free from a bad or negative social circle.

I was always thinking, games that I was playing
Reiterating the idea of being caught up in trivial things and not focusing on the bigger picture of life