I've read the blurb about side effects and OCB. My take on the subject is that dopamine is part of the 'feel good' brain functions. When levels are low through PD we naturally don't feel good and the addition of dopamine in an unnatural way through meds leads to surges in emotions leaving our normal 'civilised' persona at the door of the bedroom/shop/casino/online temptation. A bit like being drunk before undertaking the activity.
I think the PD meds simply release pre-existing tendencies we have spent both concious and sub concious effort in keeping submerged. It's little wonder how devastating having these released with little or no control can have on us and our loved ones.
I'm often told I'm more demanding in many ways simply because I'm less inhibited in seeking something while I can still do or appreciate it (not just sex). My viewpoint is that the men on pause for my love is coinciding with the use it before you lose it phase of PD.
Specifically on the sex issue, try having your plumbing working fine but your wiring not getting to the climax. I'm equipped to satisfy my love's needs but not often my own before I'm taking too long and then it's the knowledge that I'll be a pest again before the timing is right. On the blue pill (V) issue, these do help the wiring but not with natural spontanious desires when my attentions are appreciated as the pipework's satisfied my love before the pill has got the wiring connected. Then it's back to the start.
My other OCB is planning things which given PD progression is not uniform for me makes my long term plans somewhat in tatters. Ho hum life goes on.