Firstly, (and speaking from the male point of view) the balls are at the seat of things. But personally, the effect upon the self is an unbridled generosity, above all else.
Secondly, our innate (and all too familiar) control transmutes mindless lust into friendly love - the love of our fellows - the love of everything living and growing on the surface of the earth - the love of just living, and all others living here with us.
Thirdly, an immense spreading and smearing of boundaries takes place. Selfishness evaporates, leaving behaviours that are selfish from the viewpoint of wives, husbands, boyfriends, girlfriends, etc. I believe this to be all part of the general merging of meaning that can take place during high episodes.
Fourthly, that selflessness is, I believe, a key sign for me, personally. It involves a general shedding of the self, and all the ties of the self. It is a dangerous sign.
Fifthly, I don't believe we stray more or less than so-called sane people. I think the infidelity streak is shameless in its profligacy and choosiness.
Sixthly, I have always been faithful, though tempted more times than I care to number.
And last, but not least, I believe the generous impulse here defined is a fine flag fluttering at the top of the mast of whatever passes for humanity today in this world: love, and try to do no harm. If only it was so simple in real life. But it will pass muster, as an ideal to live up to.
Take care all, Dx