Van-life influencer acts like an unstable bitch, abuses her boyfriend while he's driving their van, and goes missing which leads to an international search and harassment of the boyfriend who wants nothing to do with the investigation.
They found what seems to be her body, and the boyfriend is on the run. We frequently see cases of wives killing "abusive" husbands and facing no consequences, but the boyfriend's life is forever ruined regardless of if he killed her or not.
Dude is screwed if he abandoned her alive and well. Deliberately stranding someone after allowing them to rely on a promise that you'll get them home again can leave you liable for their return travel, or for their death or injury resulting from your actions, civilly. There are a few jurisdictions that provide harsher constraints on that due to hazardous weather or other conditions.