The time I find it is NEVER appropriate to make a sexual advance is any time between the time I fall asleep all the way up until I wake up...... almost any other time "might" be appropriate.
and the best way to go about this is sleep alone .... nocturnal advances therefore never happen.
Otherwise it is best to go out on a limb and pick the fruit. If you do not risk the climb onto a limb you will never eat any fruit other than rotten over ripe crap that falls to the ground.
if the odd limb breaks, no big deal, there is always another limb and another time when you are awake to try again.... but trust me - never attempt sexual advances when sleeping. NEVER!!!