Stay with Melissa.

Melissa was angry at herself, how could I be so stupid, she thought as Nurse Caroline started ramping up her pace, her balls smacking into Melissa's taint with increasing velocity. Melissa tried to fight it, but she couldn't hold on, she wailed as she came again on Nurse Caroline's cock.

Nurse Caroline gave Melissa an evil smile before she clamped down on Melissa's left nipple, making Melissa very scared, one of her weaknesses was having her nipples played with. Nurse Caroline knew this from her teacher, the evil Dr Bluder who had taught her every superheroines weaknesses and how to exploit them.

While Nurse Caroline had Melissa weakened, she reached down and grabbed a syringe and quickly jabbed it into Melissa's right side, making the young woman cry out as she felt the syringe pierce her skin. Nurse Caroline kept the syringe in until she was absolutely sure that all of the contents had been deposited into Melissa.

After she pulled the syringe out, happy that it was completely empty, she laid down on top of Melissa and whispered in her ear: "That was a fertility booster that will overcome any protection you might have, if you've already had this shot, then it'll make you hyper fertile, isn't that great!"

Melissa shed a silent tear as she realised that this spelled trouble for her, a thought exacerbated by Nurse Caroline starting to breath heavily next to her, Melissa quickly realised that meant the evil Nurse was close to cumming. Melissa whimpered as Nurse Caroline moved away from Melissa so that she could see the panic on her prey's face as she buried her cock and held it at the entrance to Melissa's womb, looking down at Melissa she moaned as she felt her orgasm hit, flooding Melissa's cervix with her potent seed. Melissa cried out as her body betrayed her again, her orgasm serving only to pull Nurse Caroline's seed deeper inside her.