Bible Answer

Is the Proverb “guard your heart” talking about relationships?

In reference to Proverbs 4:23, which talks about "guarding your heart"…Is this is about dealing with issues of dating and romantic relationships? Or is it just a warning to watch what flows from your mouth, eg. curse words?

While we cannot offer specific relationship counseling or advice, we can offer a perspective on Proverbs 4:23. That verse appears in a larger context of teaching which we must consider:

Prov. 4:23      Watch over your heart with all diligence, 
    For from it flow the springs of life.
Prov. 4:24      Put away from you a deceitful mouth 
    And put devious speech far from you.
Prov. 4:25      Let your eyes look directly ahead 
    And let your gaze be fixed straight in front of you.
Prov. 4:26      Watch the path of your feet 
    And all your ways will be established.
Prov. 4:27      Do not turn to the right nor to the left; 
    Turn your foot from evil.

The passage commands the believer to remain fixed on living in good, godly ways. Specifically, we should put away lies and deceptions, preventing our eyes from leading us into sin and watching the path of our feet (i.e., the choices we make in our daily lives) to ensure we follow the Lord's commands diligently. Collectively, these behaviors are called "watching over our heart" (v.23). 

So this passage is not intended as relationship advice, per se. The passage is speaking about much more important issues: living a life of godliness and obedience to Christ, which has eternal ramifications for the believer.