Revealing mistake: When Tisean has just died and Stoney is getting out the car, Tisean is still breathing.
Factual error: In the bank robbery scene the signs in the teller windows say FIDC. The correct abbreviation is FDIC.
Audio problem: During the second robbery, when TiTi is on the floor, the obviously dubbed vocals don't coincide. One is of TiTi saying "Let's go." She's on the floor, obviously not saying anything.
Answer: If someone disappears after committing a serious crime, they must cut past ties to avoid being traced. That includes ending any past romantic relationships that could lead police to their whereabouts. Stony would also not want to ensnare Keith into a life of being on the run, and possibly get him arrested. Their relationship was short-term and likely would not have survived such a stressful and tumultuous scenario. It seems unlikely Keith would give up his stable personal life for such a situation.
raywest ★