Am I overthinking my married friend’s “little brother” work friendship?

[Anonymous]

she basically calls him her little brother or my little friend bc his 8 years younger than her, today she is opposite side of him and said he been coming over checking up on her and been giving her gum and candies and looked up at me to see what I was gonna say I was like Awee that’s sweet she was like yea it’s nothing his just like my little brother to me nothing else, this been going on for a while I don’t wanna say anything to her about him bc she got mad at me once so I wanted to ask y'all opinion on this am I overthinking?

Updates

7 d

I guess my question is am i overthinking that his being a just her little friend to her?

[Nikki1989]

Absolutely you are.

[Asker]

Okay