You could be reading too much into it. Or you could not.

I know that my sister and my brother poke at me in those ways, just as light teasing. It bothers me, but I know it's light teasing so I let it slide. I probably wouldn't from someone outside my family, of course.

There might be slight hints that you're bi, too. Some people seem to be rather... good at putting two and two together there. Though, I wouldn't be too worried about that. And if youare letting those slight hints show, I doubt it will ruin your chances at finding a woman. As most are not good at it. In my experience, at least.