NTA
First talk to a lawyer. I don’t think anything will happen to you.
See I’ve grown up around people who do such things. And from what I’ve seen cops just want to arrest your ex. They don’t care about you because charging you would be another case which is not worth their time. If your lawyer and the ex’s father present your case you’ll probably walk scot free because again going through the procedure for you is not worth their time.
Worst case scenario they might ask for some bribe but nothing legal.