I a am a lawyer in CT and practice in this area.  I suggest that you meet with a lawyer and have your boyfirend voluntarily quit claim his interest in the house to you and then refinance it so that the mortgage is in your name alone.  Creditors will not be able to get to the house (unless they claim that he transferred the house to avoid paying outstanding debts- which is not the case i believe).  This should accomplish your goals as the property will not be included in the estate.