Dear Abby: My ex-wife cheated on me 5 years ago. She ran off with a nonworking criminal type and has been bouncing from place to place with this bozo ever since.

When they and their 3-year-old became homeless 2 weeks ago, all of a sudden she showed up at my door shoeless and with their son in a diaper. She said her boyfriend was abusive and asked to stay with me until she finds a place. I agreed under the provision that she not see this guy.

I am a hard-working single father of two. I know my heart is two sizes too big for my own good sometimes, and I don’t want to be taken advantage of. Abby, did I make the right choice? Or should I have told her she was not welcome and turned her and her son away?