I for one, do not expect these straight guys to be actually turned on, but then I guess it depends on what one expects for them to be turned on, by. Obviously, straight men are not going to be turned on by cock, or by a man. Not unless the straight guy is actually bi, at least unless they fall into other categories.
That being said, I don't recall too many straight guys that I seduced who did not get turned on. Some guys are turned on because they get a thrill out of knowing that a guy wants them and finds them attractive.
Some straight guys get turned on by the fact that they are engaging in something "taboo". That is enough to get them engaged in the sex.
Still other straight guys are exhibitionists at heart. These guys get turned on knowing that they turn people on by exposing their bodies. These may start off wanting to expose themselves to women, but when faced with a captive audience (a gay man) they adjust and learn to enjoy exposing themselves anyway, even if it is to men.
Then there are straight men who are just natural born voyeurs. Again, these may start out wanting to watch only women, but often, they end up being turned on by watching couples, and eventually men. Once they reach that point, they become more receptive to actually engaging in man to man sex.
Some straight men are turned on by anyone having sex. These guys are more often "horn dogs". These guys just have to think about, watch, or even listen to sex going on, and they want in on it!
If you stop and think about it, you can fit many of our
Broke Straight Boys models into one of these categories. And yes, there are even more!
The truth is that straight men don't all fall neAtly into one category for us to try and place them in. They are men who have their own particular idiosyncracies when it comes to being sexually aroused. And, actually, that is not too different from us! Some of us want to see more passion and kissing, some of us don't. Some of us want to see the "money shot" at all costs, while some of us enjoy watching the top cum inside the guys he is topping, and a few of us just don't care one way or the other. We as viewers are all different and get turned on by the many various aspects of "gay for pay". Wy should we expect the straight models to be any different?
The bottom line however, is that if a model has erection issues, then why does he keep returning to do something that is not fulfilling, for him, or for us. After one or two episodes with erection issues, then someone (management) should just cut them loose.