Pray about it. Let God reveal to you how to go about it. Repent to God if you’ve done wrong. Pray that God makes your spouse’s heart moldable and receptive.
Apologize even if what you said was right. Apologize if how you said it came out wrongly. Love is not about proving who is wrong or right. What you need is for your spouse to warm up to you by you showing you are understanding. Say sorry as you give eye contact, but if you are being avoided, write a text or a letter, reach out.
