As much as I understand that it is of no help for your specific situation I still have to tell you that it's just as it is. You change, your libido will change as well. Many girls experience their sex drive to go down, but others experience an increasing sex drive as you do right now.
That said, many couples - transgendered or not - experience differences in each others sex drive and a difficult but rewarding goal is to find common ground.
What I try to tell but didn't yet: You're experiencing a problem which isn't unique to trans* perople. It's not a nice problem, but you will grow while solving it.
Please receive my best wishes and I'll keep my fingers crossed that you'll find a solution soon!
Edit:
Quote from: Jessica Merriman on February 01, 2014, 07:01:53 PM
First, your avatar photo is unbelievable! You better not ever ask if you pass because girlfriend you nail it. 
Yeah, exactly. Since I assume myself to be lesbian or bisexual (still not sure), I'd try to get a date if I had the possibility to.