Brenda and Dylan had been romantically linked, off and on, for the first two seasons when Brenda left to spend a summer in Paris, accompanied by her and Kelly's friend Donna. During this time, an attraction developed between Dylan and Kelly at the Beverly Hills Beach Club. Kelly revealed a conscience as the fling progressed, often being the one to express guilt and reluctance, while at the same time finding it difficult to resist her nearly lifelong crush. The pair's feelings began to progress from simple flirtation to genuine affection. Once the summer ended, Kelly often found it hard to watch Brenda and Dylan together again.
After Dylan and Brenda had broken up, Kelly questioned Brenda about her feelings on Dylan's new love life. Brenda stated that he was free to date whoever he wanted, and Kelly began seeing him next. Upon discovering this, however, Brenda became angered and felt betrayed. After all three had reconciled, Dylan was told that he would eventually have to choose between the two girls.
As adults these still go at it in the 90120