so last night my girlfriend bit my nipple so hard it started to bleed and now it really hurts, but it has scabbed over. the thing is is that i don't know how to care for this type of thing. any tips or advice on how to get it to heal faster?
Human mouths are nasty things with lots of bacteria. Hopefully you cleaned it well. A couple days of Neosporin or other antibiotic ointment. If it shows signs of infection (wound hot to the touch, fever, red steaks) head to your doctor for antibiotics.