Is it normal for a brother to whistle at his sister?
The other day, I was facetiming my friend, "Amanda" who is 17. I am 18. Amanda has a 19 year-old brother, "Mike" and a twin brother, "Steve." When we were facetiming, she tried on her hoco dress to show me. I told her it was pretty. Then she said, "Thanks! Hold on a second..." and then she went into the other room. I heard her say, "Hey Mike, do you like my homecoming dress?" And did on of those "Woo, whoo" whistles that guys do when they think a girl is hot. It really bothered me. They continued to talk, but I couldn't hear what they were saying, but then he whistled AGAIN. Is that normal?!?!? I don't have a brother, so I have no idea what is normal. Amanda also says that Mike sort of likes me. All three of those siblings are VERY close, and they all get along really well. I have never gotten weird vibes (until this incident) from Mike, but I have always gotten weird vibes from Amanda and Steve's relationship. Is it just because their parents encourage family-closeness, is it normal, or is something weird going on?