My sexuality is completely identical to this but induced through having cuckolding relationships with women what made me a total gay bottom in the end. Some straight men should be careful for what they wish for... :)
Makes me perfectly happy now , being limp all the time and mainly orgasming by anal. My sexuality shifted to my ass as also my sexual arousal manifests itself now by some tingling in the head of my penis (that indeed works as a clit now..) and some tingling between my balls and asshole (perineum). And the moment of no return was the first full body orgasm I got and when being fucked.