Bryce's history with booze and drugs was fairly typical for any teenager looking to have a bit of fun. He had partaken in some underage drinking at parties, and his parents knew he probably smoked marijuana. However, nothing pointed towards any sort of addictive behavior.
Those close to Bryce were surprised to see a sudden increase in his drinking habits. Bryce was drinking every day at this point, and when questioned on it, he would simply say that nothing was wrong. After some pushback from his girlfriend, Bryce eventually admitted he was also taking the 'study drug' Vyvanse.
From there, things went downhill for the couple. The effects of Vyvanse offer extreme bursts of energy, and the similarities to methamphetamine made the drug both a recreational and academic tool across U.S. college campuses. Kim noticed these effects in Bryce, who reportedly took the drug with a friend in order to stay up all night drinking and playing video games.
Kim's pushback on this behavior seemingly irritated Bryce, as he eventually sent her a vague text message insinuating that their relationship was over.
Strangely, despite Bryce apparently ending their relationship, he visited Kim's apartment that same day. Around 11:00 p.m. that night, Karen Laspisa received a call from Bryce, with her son asking her to speak to Kim in order to convince the young girl to give Bryce his car keys. Prior to the call, Kim had begged Bryce to sleep before he used his car, likely in response to his odd behavior, and was withholding his keys.
After speaking to Karen, Kim eventually gave her now ex-boyfriend his keys. He left the apartment roughly 30 minutes after calling his mother.