His wife burned down my house, am I right to believe him?

He tells me that he don’t know this woman and she’s a stalker. It turned out that he was married and he does know this woman. He never spoken to anyone about her or anything. He’s been staying and living with me apparently while she was away for work. She contacted me about sending him cash app requests and everything. He’s been lying the entire time and using other women but keeps calling this woman a stalker and etc. I don’t know why his mom lied and his family lied about the girl. They played like he didn’t want her and that he didn’t know her. I know she is behind my house burning down. I was at work and my entire house burned down

His wife burned down my house, am I right to believe him?
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