Why does he only flirt if we are alone?

[Anonymous]

My guy friend only flirts with me when we are alone. If there are his other guy friends around, he will act casual like if nothing and not flirt. Why does he do this?

[caoimhemoore]

Although it could mean he doesn't want to "show you off to his friends," he could also just feel awkward about flirting in front of them

[Tdieseler]

Classic "don't want anyone to know i like you" syndrome...