Fics like Apheresis

As a phlebotomist with the Red Cross, Castiel has donors, not patients, and given donation protocols spacing appointments out, it typically takes a year to call someone a regular. Castiel bonds with his coworkers instead, and he stays over with his best friend and godson almost as often as he goes home. There's little exciting in the day-to-day, but routine is no hardship. A new part of that routine comes in the form of a talkative if nervous man named Dean, whose pulse races every time Castiel takes it. Dean often flushes and looks uncomfortable, although he covers it up with jokes, teasing, and a ready smile. It makes his consistent, fortnightly platelet donations all the more admirable, but for some reason, Dean only looks even more nervous whenever Castiel brings that up.

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