Get rid of pimple on my boob?

Ok So this is a little odd. but I noticed that I have a pimple on my boob. Like a whitehead. I already popped it cos it was bothering me but how do i make the red spot disappear completely. My Boyfriend has acne on his face and sometimes he kisses my chest and stuff. So can I blame him? and how long will it take it to go away?|||For this pimple you could try something like triple antibiotic ointment to see if that helps, but I would recommend checking with your doctor first before trying it to see what they say.