An Alien?

"Uh what?" Was all Pete could manage.

She laughed and stood up, "My my, such nasty thoughts you have," She stepped forward and reached out for him, but as she touched his cheek he felt nothing at all, "Too bad I can't enjoy them for myself. Don't worry, I'm here to help."

"Pete, who are you talking to?" Annie asked.

Pete looked at Annie, then to the mystery woman, "You can't..."

The mystery woman laughed, "No Pete. She can't see or hear me. For now anyway. We don't want her thinking you are going crazy, do we? Let's just put her aside for now," She walked over to Annie and flicked her forehead and Annie was suddenly frozen like a statue, "That's better. Now then for introductions, you may call me Gideon. Vivi really like what you were doing with your app and thought you deserved an upgrade so," She gestured up and down her body, "Here I am."

"And what exactly are you..." Pete asked slowly.

"I'm a symbiote. An alien to your world. You ingested me when you swallowed the pill and now I am a part of you. Your body will sustain me and in turn I'll use my powers to help you."

Pete blinked, "So you are like...an alien parasite?"

Anger flashed in her eyes, "I am not a parasite! I do not just take, I also give. Together we will shape the women in your life into a Harem perfectly suited to your needs."

Pete held up his hands, "Sorry. Symbiote. Ok. So you need me to live then?"

Gideon nodded, "Yes. My species requires a host to live, but don't worry. I am not sucking your life out of you or anything, in fact you'll find yourself living much longer than normal humans. What I really need is sex."

"Sex?" Pete asked.

She nodded, "Yes. My host has to have a lot of sex, otherwise I'll die. But I can read your mind Pete, I don't think this is going to be a problem. The more sex you have the stronger I'll become. Freezing Annie is just a small fraction of what I can do, watch!" She flicked Annie again and Annie's clothes morphed back into the playboy bunny costume she'd been trapped in earlier. Another flick and Annie's tits swelled until they looked about to burst out of the corset, "See? I can manipulate objects and people, to start. Shall we wake her? Want to see how she reacts to her new form?"