Hello all, for the past few months I've noticed this thing. Sometimes it's easy to notice and sometimes it is not. It's painless and it looks like natural. I would like to mention that I was having unprotected sex but with my 5 years relationship.
When you have markings like this that are not having a huge impact it can be difficult to fathom out what it is that has caused it. The important thing is for you and your partner to continue to enjoy your sexual relationship.
In future, try to note when the markings are worse, do a bit of your own detective work and puzzle out what was going on in the previous 12 to 24 hours. Most people get responses like this when they have started with a different Lube, started applying something different like a Baby Oil, started applying a skin cream, or moved to a different brand … these are the types of things you need to suspect …