AIO I (28f), met this guy (37m) on a dating app and we spoke for about 3 days but I found a connection with someone else and he threatened me

Yeah so was speaking to him for about 3 days. He was aware I was talking to someone else too because I asked him how his app experience was and he asked me right back. I was meant to meet him today but yesterday I cancelled and thank God I did. I know it was a bit last minute. But he sent me these messages in response- and I woke up this morning to a message from an American number.. should I be scared?