I got like a rug burn on my junk after I dry-humped my gf. It hurts like crazy. How can I get it to go away? How can I avoid it next time?

Local skin irritation will go away with time. In the meantime, you could apply vaseline to the area to keep it from rubbing against your clothes and causing further irritation and pain. However, remember that you CANNOT use vaseline with condoms – it prevents them from working properly.

If you need additional lubrication during sexual activity to prevent friction-related problems like this in the future, choose a water-based lubricant (such as KY jelly or Astroglide). Water-based lubricants are safe to use with condoms. Lubricant is usually found in the same section of the drugstore as condoms.