Do your close friends know every detail of your fledgling relationship?
Don't dishonor God by revealing things that would be unflattering or misconstrued by others regarding your marriage. Gossip is destructive and slander is evil - especially when it damages your spouse.
Here's a post I wrote a few years ago about this very thing:
II Corinthians 10:5 says this, "... casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ."
There is no doubt that I generally "bring every thought" kicking and screaming to obey the nature of Christ. Flesh wars against the spirit. The tug-o-war is real. The evil one wants to create an atmosphere of defeat, discouragement and doubt. His desire is for you to exhibit distain and disgust towards your mate. He wants to unravel any victory or alliance that would bring God glory.
Galatians 5:22-23 is one of the greatest New Testament passages written by Paul that contrasts the works of the flesh with the fruit of the Spirit. In my humble opinion self-control is paramount to overcoming an adverse and abrasive nature.
Our words carry an immeasurable weight with our spouses. We can bless them with uplifting positive speech or we can curse them with careless negative talk. Jesus Christ Himself said, "For by your words you will be justified, and by your words you will be condemned." You can't disguise how you really feel.
Ask God to help you with your temper, your criticism, and your negativity. Pray for your fruits of the Spirit to be evident to your mate. Immerse yourself in Scripture and meditate on passages that reinforce edifying speech. Here is a post I wrote on the Fruit of the Spirit:
What do you struggle with most in your unequally-yoked marriage? Do your words get you into trouble? Do you fall into the trap of bad-mouthing your spouse? How do you effectively battle this issue in your home?