Mentioning the ex could have a negative impact on the relationship, depending on the attitude and memories of the ex. If both parties have a negative attitude towards the ex and the memories are unpleasant, mentioning the ex in daily communication may increase tension and unnecessary stress. If both parties 'attitudes and memories towards their ex were relatively neutral, but frequent mention of their ex on certain topics might be regarded as sensitive or unnecessary topics, thus affecting their relationship. To avoid affecting your relationship, you can try the following methods: 1. avoid discussing your ex on sensitive topics such as marriage, breakup, violence, etc. 2. share your thoughts and memories of your ex but avoid excessive discussion. 3. avoid mentioning your ex repeatedly on certain topics to avoid unnecessary embarrassment and conflict. 4. Build trust and respect to avoid over-reliance on the experience and evaluation of your ex in a relationship.