Cuckold fantasy relationship part 3

After a short time thinking about the Councilors advice, I decided that I would stop smoking while my girlfriend was making cream pies and since all of her girl friends were really pretty and all had cute little asses I was looking forward to being edged by them. My girlfriend seemed really happy now and left me with her friend while she went upstairs to make cream pies. I lay there on the sofa waiting while her friend switched on the tv she then walked towards me to use my face as her seat, I was kind of glad I couldn't see the tv cause she was watching star trek a show that I hate watching. But after a few minutes she turned on my girlfriends vibrator which she had left on the sofa and moved it over my crotch area. I was really surprised how much this all turned me on since I was expecting her ass to smell gross but instead it smelt of sweat perfume and fresh washing. she was very careful not to leave the vibrator on my crotch area too long almost as if she new I was about to cum, but then each time I was about to cum she would move the vibrator away. After some time my girlfriend came downstairs and then her friend left, my girlfriend said this was what she wanted to do from now on while she was making cream pies for me to slurp up. and so for the next few months this is what we did but even after all the Councilors advice I was still finding it hard to get an erection. My girlfriend and I went to see the councillor again and she suggested I try wearing a butt plug while having sex to help stimulate my prostate to better maintain my erection, I thought surly that would be gay or something, but then the councillor explained as long as there's no man to man contact everything so far that she has suggested isn't gay. with this reassurance I turned to my girlfriend to ask if she would be ok with me wearing one and she said she would be only if I'm wearing it while she's on top when we're having sex to make sure it doesn't slip out. at this point I agreed and my girlfriend said she had already ordered one for me while I was listening to the Councilor explain things. when the plug finally arrived, my girlfriend couldn't wait to try it, I didn't really enjoy the feeling of something in my ass but was amazed when I came the feeling it gave me when my prostate was pushing against it. From then on this is how we had sex. But we did notice one side effect every couple of months I would have to get a new plug that was slightly bigger each time to stop it slipping out when I stood up after sex. This became a bit of a problem when we couldn't order any bigger plugs than the xxxl one. At this point we had to go and see the councillor again and she suggested that instead of using plugs I should let my girlfriend use a strapon on me since by this point I could no longer get an erection anyway. I protested strongly saying that this is gay now, but she calmly explained as before its not as its only between me and my girlfriend and there's no man on man contact. My Girlfriend also explained now that since I can't get an erection most of the time it's the only way both of us can still have sex. After listening to both of them I still was very reluctant and asked if there was any other way, the councillor then responded and said there is a new experimental d**g called Viagra but it does have a few side effects like a hole A4 sized piece of paper full of them. Now yet again I have two decisions to make, do I go with the anal option or the oral one.....................find out in part 4