we could say they are really close in age cos maybe one mom had him via a sperm donor and the other mom had her via a sperm donor if that is cool with you? i love the idea of a super close set of siblings, the kind that don't judge each other and tell each other everything and are super gossip over anything and everything and go to each other with problems, etc! i like that he was a dancer growing up, maybe they started dance classes together when they were little but as they got older while his interest stayed in dance her's went another direction, like singing or something along those lines? i feel like she is a super girly girl, always been into makeup and clothes, probably dressed him up for as long as he let her do it, including the makeup she would steal from their moms. DO you love or hate any of this? do you want to make me a custom so we can discuss more?