I would recommend Anadrol. In my experience it boosted me much faster than anything else I've tried. I've used it for 8 weeks and 50mg/day. Keep in mind that you shouldn't exceed 10 weeks.
Anadrol will definitely affect your libido positively. In my experience it took me 2 weeks to see the effects while I'm using 50 mg/day. But keep in mind that use for more than 10 weeks is known to be harmful to libido in long run.