He would pick me up at a bus stop and take me back in two days. He says I am safe. My friend is afraid of me being hurt - she's the only one who I've told about him. I have his address and phone number. Somehow I think you knew the answer to this question before you even read this.
Widows are easy prey for petty criminals.
You can do some sleuthing to find out more about him. Ask him where he works and then call his place of employment to see if he really does work there. Call the operator and see if his name, address and phone number synch up with what he told you. Think about other details he's mentioned about his life and try to determine if they're true. You can also call his local sheriff's office to find out if he has a criminal record.