Tension quickly rose on their union as Summer became more jealous when Austin develops a friendship with Cassie's twin sister Mariah Copeland, whom she strongly dislikes. When Summer's mother recovers from her coma, Summer introduces Austin as her friend, upsetting Austin with Summer claiming that the doctor is requiring her family not to give upsetting or shocking information to Phyllis. Phyllis learns from Summer that the two are "engaged" and is enraged; but not as enraged when she learns the two are married and Austin is a felon. Phyllis sees the relationship is blossoming so Phyllis agrees to ease up and leave them be. Months later, it is revealed to Summer that Sharon switched her paternity results. Summer and Austin once again face relationship problems, when Summer learns Mariah kissed Austin. On Valentine's Day 2015, Abby Newman invites Summer, Austin, Mariah, Kevin Fisher, Fenmore, Noah, and Courtney to the Abbott Cabin. After Fenmore spiked Abby's punch everyone falls asleep. After Kevin wakes up, so does everyone else to discover that Austin is missing. Kevin searches outside in an intense snowstorm and finds nothing. While the group is talking about Austin's possible whereabouts Austin falls out of a wardrobe and after Courtney (a police officer) tries to revive a unresponsive Austin, she declares that he is dead.