You're keeping her.

You look down at the slender, trembling mess the harpy has become, your hand absently stroking her hip. It feels so good inside her small, tight body, her melodic screams of ecstasy are so delightful...and you really want to know how it feels to plunge your dick down her lovely little throat... You can feel yourself beginning to stiffen again, your grip on the harpy's hip tightening as you growl, prompting Anja to lean close and lavish you with worshipful kisses.

You already know you can't let this little bird go.

The more logical part of your mind offers justification. With a third member to your little party it will be easier to keep Anja fed and strong without jeopardising your own health (that you would get to see the succubus seduce the harpy over and over again is an admitted bonus) and having someone who could fly would make a lot of scouting around much easier.

"C'mere," you growl, pulling Anjya off of the harpy and to your side. She pines a little, but your pet knows her place and she quickly coils into your side, continuing to kiss at your neck and shoulder, her soft breasts pressing against your arm.

Reaching down you scoop the dazed harpy up, pulling her close to your chest. Her body is definitely much, much more slender and flat than Anja's, due not only to youth but her species. Excess bulk makes flying hard, and for all the power that lies in those talons she has for feet, you can feel how light and frail she truly is as you hold her to you. She stares at you with glossy eyes, a tired, lusty smile on her face. It's a hard expression to resist and you lean in and kiss her, ravaging her hot little mouth with your tongue, tasting her mouth and Anja as you do.

"You're my **** now," you tell her as you break the kiss, the harpy mewling at the sudden lack of affection as Anja giggles. "Do you understand? You belong to me and I am never letting you go."