You can take the supplement route: Drive, 6-Oxo Extreme + good Tribulus, or any of the gajillion supps out there.
You can go the natural route and try this therapy where you masturbate until your just about to ejaculate and then stop. A couple studies have shown that abstaining from ejaculation for seven days at a time maximizes your bodies natural T levels, thus maximizes libido. Let me tell you, by that seventh day, you're gonna go balls out on that ass! I've tried this method a couple times and have found that after three days I cannot take it anymore and I am an animal that day. This technique can be difficult to do if you have sex everyday, but if your lady doesn't mind you not finishing every now and then, then it could work well for ya. On the other hand, if you're like most guys (with a girlfriend, that is), you have sex 1, 2, or 3 times a week, so this method will be very therapeutic and the best part... it's FREE!
OR you can go the pharm route with Dostinex but it had some weird sides like clouded thinking, but I guess could be countered with some stims. Just use the absolutely lowest effective dose of Dostinex because it has been linked to heart problems in studies of very high doses. It increases dopamine D2 activity (D1 is the dopamine that makes you feel really driven like with amphetamines and whatnot, so the) so the increased D2 activity does make you all motivated but it KILLS your prolactin levels (which are highest right after ejaculation), enabling you to keep it up even after busting! It's also used to treat (not cure) gyno and hypogonadism (low test levels, little balls, heh)
And to top any of these routes off is a vasodilator like Cialis or Aspire. In my experience:
3 caps 6-Oxo Extreme
2 tabs Tribex Gold
1 10mg tab Cialis
DAMN! It was one of those nights where you hear that voice in your head saying "If you experience an erection for 4 hours or longer...." haha. Basically, it makes you the king of the jungle.