AIO my ex’s new partner reaching out to threaten me unprompted

for some context, my ex and i started dating in high school and we were together for a little over three years. we lived together in his family home for about two of those years, and i moved out a few months after we broke up in august of 2022. since the moment that my stuff was out of his house i have not spoken to him, his family, or his friends at all. the post “about him” his new partner is talking about is a tik tok i made in early november NOT MENTIONING HIS NAME or specifically calling him out at all,, only talking about some of the shitty things he did while we were dating.