Green gecko and I get that (he's not my sister obviously and doens't look it) but people ask if he's my brother, especially because he does a lot of activities with the kids (like scouts).
I just look at them, laugh and say no. Then carry on usually.
It really depends on if you want to be "outed" as a couple or not. Generally GG and Maca prefer we NOT do that, but there are some people I just don't care, and I say 'uh no, he's my bf."
"Love As Thou Wilt"