Reading too much fanfiction puts crazy notions in your noggin. I would love to get a soulmate/soulmate identifying marks PSL going. The crazier the pair the better.
Would really love any of the following: Erik Lensherr (First Class) Charles Xavier (First Class) Natasha Romanoff Phil Coulson Edwin Jarvis JARVIS/Vision Bruce Banner
If you aren't familiar with the genre here is an excellent example.