I am friends with this female and I’m usually nice to her and do things for her that many men will not do. I have noticed when I’m around one of her friends she is jealous of how I treat her. Sometimes she’ll ask me to do things for her like can you find this lost item when she’ll know where it is or ask for something else. I happy won’t do it when I noticed this behavior. Sometimes I do many things for my female friend. Her friend one time asked me why are you nice to this woman and I couldn’t say anything. I just looked at her with a blank stare. IDK if her friend is noticing something in me that she doesn’t realize.