His house is clean no signs of other women?

I was thinking he is cheating on me with his ex at his place, the reason:
like 3 month ago I found a cut pink fingernails on his sofa , very weird.

On Friday i went to his house after a month without seeing him
didn't find No hair, smell or clothes
Only his hair and his smell
And also my hair
So my hair been there for a month
His house is clean no signs of other women?
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