Nikita_
To me these 3 cards might show a sex addiction with the obvious phallic and feminine symbols combined with the devil.
And I have heard that some sex addicts need that kind of sex to get them off. No feelings, sex with strangers, or just with people that they don't really like.
So as we all know this was representing a problem, the problem may be he genuinely cared for her and so was unable to perform.
Sex addiction is a complicated problem can sometimes be caused by not dealing with the emotional scars that child sexual abuse leaves. When an older women preys on a young boy going through puberty it leaves the poor guy very confused and emotionally hurt but he can't talk about it. You would think that a womanizer likes women but mostly it's the reverse.
I think this is a great post Leonie, and very relevant to the reading in question..and, although I don't know the problems in the background of the man in this case, which are probably along the lines you mentioned, I believe the Devil there stands for those very issues, preventing sex despite a strong attraction or potential..