Second, an alpha male is HONEST WITH HIMSELF: you were so "angry" because you were SCARED, either about her safety, her cheating, or both. You beligerant unfocused rage and the whole "I been dissed" attitude is not attractive. Really, really not attractive. I HATE the whole faux macho don't-diss-me BS. Get clear with yourself about your own feelings and report them accurately.
Oldtimer,
I reall don't think that was it. The best word I can think of for the way I felt last night was "impotent." Powerless. And like a FAILURE.
OK, that's three words, but "scared" wasn't one of them. I just felt powerless over the situation, and not knowing how to handle it.
