Fuck her through her orgasm.

You decided to take the risk and keep going, increasing the pace and the **** of your efforts. This had a near immediete effect on Bella, who moaned even louder as you fucked her. You still felt her Giga Drain power sapping away your energy and driving you closer to orgasm, so you decided to step it up even further.

With one hand you pulled Bella's face to yours, locking her in a deep kiss as you fucked her in earnest. Bella's eyes went wide almost instantly, and she moaned into your kiss as her own arousal spiked. You felt confident she would climax any second now under the effect of your own signature power.

What you didn't expect was that Bella's power would be directly tied to her arousal. As she grew more aroused, her draining powers increased their potency, which had an immediate effect on you. You cried out in the midst of the kiss, your body spasming as Bella's tight pussy almost violently sucked your cum out of your dick.

Bella was clever enough to hop off of your dick just as a wave of blackness overtook you. You fell back, fading out as you did, and by the time you hit the ground, you were already out cold.