Will i be charged?

My ex from about 2 years ago helped me pay some bills when we were together. We were only together for about 9 months and during that time I couldn't work due to health reasons. So I used the rest of my money that I had for my bills. When I was out of money, my ex gave me money for my bills (couple car payments and couple months rent) the rest was for date nights (suppers and movies). Now I did tell him that he didn't have to and I was looking for easy side jobs as well, but he himself went to his bank got money and then handed it to me. Never once did he say I have to pay him back nor was anything legal signed by the two of us stating that I had to.

Now 2 years later his new gf has it in his head that I stole it and now he's harrassing me to give it all back. He's even messaged my mom about it. My current bf, my mom, friends and an ex rcmp officer have all told me that there is nothing my ex can do unless there is some legal paper signed by us stating I have to give it back, as it was his choice to help or not. My dad on the other hand has kicked me out of his life for this and said I could be taken to jail. Which one is right

1. If he was really serious, why wouldn't he have done this after we broke up. Waited this long and has been harrassing me for months but yet has not gone to cops yet.
2. it was his choice to help or not. I never asked him to and there is nothing legal signed. So the cops won't be able to do anything and just say it's a relationship problem.