Boyd gets involved with Whiskey now Dr. Saunders, who'd previously been in a love/hate relationship with Topher
I'd actually say it this way: "Boyd gets involved with Whiskey who used to be #1 until Echo displaced her; Boyd switches to Whiskey when he's displaced in his relationship with Echo by Ballard." Which is to say "Angel gets involved with Cordy who used to be #1 Top Dog until Buffy displaced her (she has more power than Cordy, they compete with each other); Angel switches to Cordy when he's replaced in his relationship with Buffy by Spike. (not causal, but correlational)"
no subject
I'd actually say it this way: "Boyd gets involved with Whiskey who used to be #1 until Echo displaced her; Boyd switches to Whiskey when he's displaced in his relationship with Echo by Ballard." Which is to say "Angel gets involved with Cordy who used to be #1 Top Dog until Buffy displaced her (she has more power than Cordy, they compete with each other); Angel switches to Cordy when he's replaced in his relationship with Buffy by Spike. (not causal, but correlational)"