Remember guys, there is nothing you can do about the happiness of someone!

Your conversation must be like:

-You should get professional help.

-But I can't, I can't afford it.

-Then there is nothing I can do.

Or:

-You should get professional help.

-I tried but nothing works.

-Then there is nothing I can do.

AND DON'T FEEL BAD ABOUT IT, CUZ AS I SAY, "THERE IS NOTHING YOU CAN DO." No, but really, you can't stop someone's depression, you're not responsible for it and if you feel that their depression is affecting you, you have all the right to go, have some self-love and leave.