Cooper and Sportolari (1997) found that online relationships could follow a boom and bust' pattern.
Disclosure levels were higher initially online (due to anonymity and increased sense of security), meaning relationships were more intense early on (Boom')
BUT... this intensity was impossible to sustain as relationships lacked basic trust, leading to break up ("Bust").
However, Rosenfeld and Thomas (2012) found no evidence to support this.
There was no difference between online and offline relationships in ratings of relationship quality.
This suggests that online relationships are no different to face-to face relationships, despite possible differences in self-disclosure levels.