"I just follow what my heart wants." said Angus narcissistically.
Actually, Angus already expects such a situation to happen to Lily. Although he doesn't expect Benjamin to have such a dark past, he knows Lily will start having an existential crisis sooner or later.
In his past life, there were times when advanced artificial intelligence developed beyond prediction. Most of these cases are called Singularity. A phenomenon where artificial intelligence development is beyond control and prediction.
Unlike the urban legend in which artificial intelligence goes rogue and kills humanity, they actually have a sort of existential crisis when reaching the Singularity Phase. At this phase, they may become dangerous and have a vulnerable mind.