It is great to know you have so much compassion that you even let them stay with you. This person, although lying to you, is him leading his wrong way not of not to suffer. In a way through compassion and kindness we hope that he can see your compassion and change himself as a result, but unfortunately, he didn't see your compassion and kindness and didn't change.
That is a saying that goes, gives a man a fish and he will eat fish for a day, teach him how to fish and he will drink beer all day on a boat.
If he doesn't want to learn how to fish, there is noting we can do for him, giving him fish is not in anyway helping him either.
Since this is in the past now, there is not use thinking about it and attach to it. Sometimes, we fall into such situation. Once I tried help a foreigner couples for direction, I almost give them the wrong direction due to miscommunication.
Most importantly in this matter is that you family is safe and sound.
We are born with compassion, it is just that we had lost it.
Understand no matter what happens, you already had shelter and food, these are enough for you to find happiness.