The Birth of Emma: Rachel gives birth to her and Ross's daughter, Emma, a significant milestone for the group.

Ross and Rachel Living Together (as Friends): Ross moves back in with Rachel to help with Emma, leading to humorous and sometimes awkward situations as they navigate their non-romantic co-parenting arrangement.

Monica and Chandler's Fertility Struggles: Monica and Chandler continue to face challenges with infertility and begin considering adoption.

Joey and Rachel's Romantic Relationship: Joey and Rachel finally act on their feelings for each other and begin a romantic relationship, which proves to be complicated and ultimately short-lived due to their established friendship and lack of romantic compatibility.

Phoebe and Mike's Breakup and Reconciliation: Phoebe and Mike experience a temporary breakup due to Mike's reluctance to get married again, but they eventually find their way back to each other.