Not sure if this is the right forum to post this (its not really BDSM but it is health sort of...)

Ok, I er, have a friend who, er...

Ok, I'll be honest... recently I have been having some problems with arousal. Its partly the heat of the summer but there is also an ongoing problem in that I seem to currently find it very difficult to get and maintain an erection during vanilla sex in the evenings. Mornings I am usually fine but mornings are not always convenient.

I would say that its possibly related to fetishism (a psychological dependence on an object during sex which prevents arousal when it is absent) but I don't think it is - it seems to also happen during kinky sex too.

Physical problems have been ruled out, largely, by my doctor (and a specialist nurse who insisted on showing me some quite scary equipment they use to insert in your penis surgically...). I was concerned that the diabetes was finally taking its toll on my blood vessels but, apparently, I have a very healthy pulse in all parts of my body.

So I am at a loss as to what may be causing it other than tiredness and/or boredom at routine sex in the evenings (and we rarely have time or inclination to make it less routine...)

Anyone got any thoughts or ideas which may be causes or solutions here?