tune in sexually to the female part of that man...
Many straight men are a bit scared of anal pleasure as they associate it with "being Gay" but for many others it's part of what they do sexually and are quite happy to have their wife put on a big strap-on dildo, and give them one. Several men who have bought the enemagura device that I sell on my web-site have told me of the incredable sensation they feel when they are fucking their wife, as this device allows for hands free stimulation of the prostate.
If you feel he would like to be intimate with another man, you need to start putting that on the agenda. When he is fucking you put a lubed finger up his arse and tell him you would love him to recieve as much pleasure in his ass as he give you in your beautiful cunt, tell him you would like to see him just touch another man's cock. Tell him your fantasies, and keep telling him your fantasies, take him on a big ride. Maybe you need to be abit of a dominatrix. Give him permission to give himself permission and once he has had a dabble he will be better at sex. He will get an energy from that experience that will make him a better man, and a better fucker and believe me you will enjoy the benefits.
I occassionally have sex with women it makes me feel sexually complete, as it allows me to acknowledge all parts of my sexuality. It' gives me a warm energy that I can physically feel and in turn I use this energy while I am having sex with other men, as I can be more in tune with them as i am able to tune in sexually to the male and female part of that man.
I wish you lots of luck and love on your sacred journey, Seb.