Need advice

Rachael

I had a boyfriend we both dated for about 4 months, he had sex with me while I was drunk and woke up I have lost my virginity.... and then he bought me a phone and some other accessories.... but later on I discovered he’s married so I decided to end the relationship in December.... now he’s threatening me that he has my friends and family contacts and that I should return back his phone and the accessories he bought me...or he will report the phone as stolen..... I feel upset but at the same time a little a calm... please help any advice on what to do? ...