They do it with another partner(s)

As Abbadon drove the angel crazy nibbling on her ear, Amitiel let out a yawn.

"Oh, what's wrong, baby?"

"It's nothing," said Amitiel. "We were just up really late last night."

"You weren't complaining before," smirked Abbadon, having kept the both of them up all light with their love-making.

"No, I certainly wasn't."

The angel's face blushed bright red. She never knew her humanoid aspect could bend into so many positions. Nor did she know just how good it would feel. She practically passed out after cumming so many times.

"How about we have a little help."

Abbadon reached to a desk on the other side of the bed, practically having to drape herself over Amitiel's lap and giving her an unobstructed view of her perfect butt, and grabbed what she was looking for: a chrome-silver bell.

She rung the bell, the sound echoing in an ethereal manner.

"What's that?"

"The service bell."

"Uh, for what?" Amitiel had to fight every instinct to reclaim her modesty. She was practically naked after all, and Abbadon was entirely so.

"I thought a little fun with the staff would perk you right up. They've been trained for it."

Abbadon went back to kissing her neck, her tongue stroking the side of her throat while she cupped one of Amitiel's breasts through her bra.

There was a part of Amitiel that wanted not to share her bed with someone other than Abbadon. She wasn't sure if it was her "virtuous" side that didn't want to taint their love by fornicating with another person, or a more selfish side of her that didn't want to share her girlfriend with anyone. Turns out love was a lot more complicated than she originally thought.

Ironically, Lust was much easier for her to understand. She was going to have sex with Abbadon while someone would watch. Or someone was going to fuck her while Abbadon watched. Or both would fuck her at the same time.

It sounded hot.