Why doesn't she mention her boyfriend to me?

Anonymous
So one of my friends lets call her Shannon, she has a boyfriend and I didn't know this myself until one of our mutual friends said about him. Now I don't like Shannon like that and especially not as I have found out she has a boyfriend but I don't seem to know why she hasn't mentioned him to me.

The best example of this was I was having a party and Shannon was getting picked up by her boyfriend, she asked me if he could come in and I said sure but this is her exact words in asking me... "Heyyy can my friend come in for a few minutes? He's picking me up and wants to say hi to everyone before we leave. Are you okay with that? are you sure you're okay with that? are you really sure you're okay with that..." each time she said are you sure I was just like YEAH!!! the more the merrier and what not :').

Another example for her to bring him up to me would have been in our free.. She was doing some photography work and showing me her pictures and I was naming the people in them then her boyfriend came up and she was like "there's another person" so I just went "Charlie" and she went silent?

What possible reason could she not want me to know about her boyfriend?
Why doesn't she mention her boyfriend to me?
4 Opinion