Are you changing someone, or helping them?

Have any of you ever come across a situation where you discovered a friend or partner was not who you thought they were? Basically, you got to know them more… and what is revealed isn’t exactly positive.

A conflict of morals, interests or beliefs.

Heated discussions take place because both of you believe your idea is best. Where does one draw the line on HELPING someone versus trying to CHANGE them? How do you know if it’s either/or?