This was one of my favourite parts of The Sign of Three. Sherlock is so jealous of Major Sholto, and Mary as well. The funny part is that Mary not only sees the blatant jealousy, she teases Sherlock, not unkindly with, " Neither one of us was the first", I believe.
Me-"Wait wait wait. I WISH YOUR FAMILY COULDVE SEEN THIS. If it was someone from her family it would've said OUR FAMILY but it didn't. Maybe he killed her family. Charles oh Charles just wait til you get a piece of Sherlock."