I can offer some general possibilities for why someone might create a secret Facebook account and block their partner:
Privacy concerns: Your husband may have created a secret Facebook account to maintain some level of online privacy or avoid sharing certain aspects of his life with you. This might not necessarily indicate anything sinister, but he could be trying to have a space where he feels more independent and can interact with others freely.
Communication issues: There might be underlying communication issues in your relationship that have led him to feel the need to create a secret account. He could be avoiding discussing certain topics or feels uncomfortable sharing certain things with you.
Past issues: If there have been trust or fidelity issues in the past, he might have created the secret account to keep certain interactions hidden.
Venting or seeking support: Sometimes people create anonymous or secret accounts to vent about personal struggles or seek support for sensitive issues they don't feel comfortable discussing openly.
Conflict avoidance: He might be avoiding potential conflicts or disagreements that could arise from his activities on Facebook, and thus decided to block you from seeing his actions.
Fear of judgment: Your husband could be engaging in activities or following people that he fears might be judged or misunderstood by you, leading him to keep it hidden.
Emotional distance: It's possible that he's feeling emotionally distant from the relationship and is using the secret account as an outlet or a way to detach himself.
It's essential to have open and honest communication with your husband about your concerns and feelings. If you discover his secret account and it's bothering you, approach the situation calmly and discuss your feelings and thoughts. It's crucial to maintain trust and understanding in any relationship. However, jumping to conclusions or making assumptions without talking to him directly could lead to more misunderstandings.