My question involves landlord-tenant law in the State of: Texas

I own a house and my ex boyfriend rents a room out but we do not have a formal or legal contract signed, we just agreed to an amount and he pays it. Hes not happy that i am moving on and is moving out at the end of the month but is threatening to bring all these women into my house.

Since i am the homeowner and we have no contract, do i have the right to eject these women from my property and call the police if they refuse to leave?