Something I've noticed is that the way I feel about sex has changed dramatically, which means my ability to instigate sex with my partner has really dropped off. Getting me turned on is a much more female affair as well, and I'd be forgiven for thinking that I'd lost penile function as the old things that got me going don't really work, it needs a much longer approach, doing the right things in the right places and finding new erogenous zones....then things will get going.
In my experience, it's the massive change in the way I need to approach sex that is difficult. Changing the hormonal balance in my body has, unsurprisingly, altered my libido from a very sexually driven guy to a girl who's rather confused by the new feelings....I can only relate it to the first go through puberty, except this time I need to unravel my old approach whilst also getting my head around the new one.
I feel you, I've always been VERY sexual, so I can't imagine this has changed, I've just got to find the way to access that part of my brain again as the old pathways aren't playing ball anymore, but I can feel there are new ones there that I've started down.
It's good that your partner is being decent about things, my girlfriend is super excellent about all of this and is giving me space to figure stuff out. It's a difficult one, though, especially when faced with all of the other change and pressure relating to that; you think you'd be able to at least lose yourself in some naughty time with your significant other!