Started with using a dildo after a bad spine injury as a way to exercise muscles in the groin area. Had a bike accident and was lucky enough i didn't had a permanent paralysis. Took me about 2 years to learn to walk and function again, now work and sports are like it was before the accident but permanent damage was done and somethings like the nervesystem is sometimes a bit fucked up (mostly after heavy workout/work/long walks)
Years back was with my girlfriend/fuckbuddy at a specialised neuro sexologist. Was a bit strange and easy on everything about sex type of woman and after a while she even came for advice at home. Had erections going out of controle that time, when wanting to fuck was semi hard but not erect and some later just from feeling Ok got a erection that stayed for about one or 2 hours. So my girlfriend accepted that and everytime i had these erections, anyplace and anytime, she initiated sex. No complaints bit wanted more controle so visited the sexologist. She adviced excersice the muscles with a dildo, insert and squeeze for a while. First few times was both hilarieus but also very hot doing excercises that way and getting a blowjob while doing these.
After a while had no problem using the same dildo's as her and it was also a lot of fun to fuck her ass with a dildo inside he pussy and just before cumming swap it to my ass and let her drain me to the last cum drup was out. Lucky enough my girlfriend/fuckbuddy is kinky and loves doing crazy stuff.
Now all is working like it should be but sometimes we love to do kinky stuff.