According to some people on this board...those like you don't exist and depictions of it in porn are nothing more than a product of some version of self hate...or a conspiracy to engender self hatred among some men.
Hey...I don't really understand the perspective. It's not my bag but to each his/her own.
If it's both his and his wife's fantasy, I don't see a problem with it. It's a rather common fantasy for a guy to want to see his wife fucked by another man, so what's the difference if it's a porn star?