1. Catholic and Eastern Orthodox - Saint Bonifacius of Tarsus repented from his rash statement and then went to fulfill his statement in penance. His actions moved Agladae to build the church and mourning her lost love slowly reformed from her transgressions.
2. Historians - That this story is fake created by the Catholic Church to inspire perverts, drunks, and idiots to repent and clean themselves up.
3. Me - Bonifacius and Agladae were bored from all the highs of life, and needed something they could truly grasp. Christianity was it, and they fully understood the principles of Christianity if not all the details. The clergy of Rome had no real reason to believe noble/perverts were here only to find a knew high mistaking this for one of thousand of mystery cults. These two were high risk and Christianity was illegal. The Christians did not want to die so two perverts could find another high get bored and rat them out. Thus sending them on a suicide mission to get them to put up or shut up.
a. Bonifacius committed martyrdom because he believed in the principles of Christianity, but mostly to save the soul of his mistress and lover. If he martyred himself she would loose something important, and she would not likely relapse into sin. Secondly, if he went to heaven without her. He knew she'd become a saint herself. Then once she got there she'd kick the crap out of him for it. However, she'd be in heaven.
b. Agladae built a church recognizing his sacrifice, and did not relapse if only to beat the shit out of Bonifacius when she got there. However, a far more concrete desire for Christianity. It was the only religion that might accept their union, because she was pregnant. She did not tell Bonifacius, because it was a death sentence for them both, and she had plans. She would sell her possessions use Christianity network to disappear into unknowns. After he died she had to be even more careful, and probably slipped the baby to a Christian family. Then lived a quiet life of penance and sorrow.