Don't trust your feelings over truth!
I want to first acknowledge that feelings are a part of us, created by God. There are times in life when we have a feeling or instinct that we do need to trust, but FIRST consider your heart and look for truth. God's Word in Jeremiah 17:9 says, "The heart is more deceitful than all else And is desperately sick; Who can understand it?" Is that something you want to just put full trust in when it's reputation is not the best? Here is another thought - feelings fluctuate as much as the waves of the sea and may change with the wind. If you go to a party, you are feeling happy. If at that party you find out your dog died, you suddenly feel sad. Feeling will come and go, but you need something to steady you through them - TRUTH, your compass.
When you have a feeling, before you run with it, check it against God's Word - the standard for truth. It offers peace despite a circumstance or feeling. This is true of any circumstance you are facing, but allow me a moment to apply it to these marriages. For those who are struggling with a feeling (anger, lust for another that is not your spouse, hurt, pain, etc.) that may draw you away from your spouse, do not trust that feeling! Trust the Truth! The truth is that you committed to that spouse for better or worse. Invest in them! Love them unconditionally! That feeling may soon change. Feelings follow our choices, not the other way around. Choose first - don't allow your feelings to choose for you. If you are at a point where your feelings are all over the place and you don't know what to do, pray and seek counsel from trusted friends. They may tell you something that you don't want to hear (because you don't feel like it), but go with it and your feelings will follow.
God's Word promises in Romans 8:28 to work all things out for good if you love God - trust that promise...
and h o l d o n f o r t h e r i d e.
Some other scriptures to think on:
No, the word is very near you; it is in your mouth and in your heart so that you may obey it. (De 30:14)
Accept instruction from his mouth and lay up his words in your heart. (Job 22:22)
May the words of my mouth and the meditation of my heart be pleasing in your sight, O LORD, my Rock and my Redeemer. (Ps 19:14)
The discerning heart seeks knowledge, but the mouth of a fool feeds on folly. (Pr 15:14)
But the things that come out of the mouth come from the heart, and these make a man `unclean'. (Mt 15:18)
"What comes out of a man is what makes him `unclean'. For from within, out of men's hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and make a man `unclean'." (MA 7:20-23)
The good man brings good things out of the good stored up in his heart, and the evil man brings evil things out of the evil stored up in his heart. For out of the overflow of his heart his mouth speaks. (Lu 6:45)
As water reflects a face, so a man's heart reflects the man. (Pr 27:19)
Above all else, guard your heart, for it is the wellspring of life. (Pr 4:23)