Would you try to contact the person or would you confront your SO?
Most Helpful Girl
My significant other may deny it if I ask.
I would message this person back asking for proof and to reveal themselves.
I would keep my eyes open for signs that my significant other is cheating.
You can't really know for sure unless you have proof or reason to believe.
People lie all of the time.
I would just become more aware in our relationship.
But not throw accusations out unless I saw something that shows that he definitely is.