That might be a bug. The Forsaken action should show up if you meet their requirements. Tempt, Traumatize, and Rampage should always be available, due to their effects. Tempt should only be able to apply it's bonus effect, if the chosen's PLEA is high enough. As an example: set this up using cheat mode.
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As you can see, HATE is at Lv 3, so I have the "Penetrate" Forsaken action available. Performing this does cause my Forsaken to take the Chosen's vriginity.
And here's the Forsaken's stats.
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To unlock the defiler trait of a Forsaken, they must perform one of the following trainings; Assist Raid, Instill Fixation, Drain Soul, or Grand Concert. A Forsaken can only have one defiler at a time. Each training will unlock the associated defiler trait for the target damage type. So Assist Raid unlocks Penetration. For distorted Forsaken, the two distorted stats will instead unlock their unique distortion defiler. If they already have their unique defiler unlocked, then training will instead swap it for the applicable generic trait. So a Tempt Forsaken can unlock Tempt by performing Instill Fixation or Grand Concert, but will be able to acquire Broadcast or Force Orgasm by performing the appropriate training afterwards.