I can offer some general insights on the topic.
Improved performance in the bedroom can have various underlying reasons, and it doesn't necessarily indicate infidelity. There could be many factors contributing to this change, such as:
Increased intimacy and emotional connection: Improved communication and emotional connection between partners can lead to better sexual experiences.
Reduced stress or anxiety: If your husband has experienced a decrease in stress or anxiety in other areas of his life, it could positively impact his performance.
Health improvements: Changes in lifestyle, exercise, or diet can also play a role in sexual performance.
New experiences or experimentation: Trying new things or exploring different aspects of your relationship can contribute to improved intimacy.
Spontaneous changes: Sometimes, people's sexual performance can vary naturally over time, without any specific reasons.
If you are concerned about your husband's behavior and suspect infidelity, it's essential to communicate openly and honestly with him. A sudden change in behavior can be a sign of underlying issues that need to be addressed, but it's not always related to cheating. Talk to your husband about your feelings and observations in a non-accusatory manner to understand what might be causing the change.
If you have serious concerns about fidelity and your relationship, it might be beneficial to seek the help of a professional counselor or therapist to facilitate productive communication and address any underlying issues. Remember that open and honest communication is crucial in any relationship, and maintaining trust and understanding is key to resolving any concerns that may arise.