I'm 19, I have mild acne, and I'm sexually active. I have noticed that I sometimes get acne around my mouth. It is not painful and usually doesn't scab over or ooze unless i pick at it excessively. It never lasts long. I'll pop it and it usually goes away. Sometimes it will fill back up, but it is mostly solid and not a water liquid.
Recently though, my lips were very chapped, an occurrence I'm quite used to in the winter. I never really use chapstick on a regular basis so I just ignored it. Until, I noticed a very tiny dark dot. It is so small that you can only see it up close