Thanks to their mutual bat bites, Steve and Eddie develop a psychic bond which they don't really notice at first until one of them jerks off and the other feels it, leading to a feedback loop of arousal.

If you want to include more than just the porny bit, that would be welcome as well. Can either be just emotions that they transmit between them or it can become a full on telepathic link. Some guilt and shame from essentially spying on each other works, but would like for there to be enthusiastic consent by the end, maybe with some teasing and some deliberately planned sessions.