I (21M) cannot understand this woman (31F). What can be done in this situation?

[Emmamma]

Basically, I go to a gym where she is my trainer's girlfriend. We all became extremely good friends and we have kind of an older sister and younger brother kind of relationship. She is a very friendly and sweet lady and I want our relationship to stay as it is. However, this seems to be drifting away. There is a guy (20M) and she treated both of us fairly equally. However, since the last few days, this seems to be changing. She seems to prefer to talk to the (20M) guy and get wry of me for some reason. And it feels like we are drifting apart. Somehow and somewhat, it feels like she is awkward around me. It feels like it is all in my head but it hurts so much, I cannot put it into words. Asking her directly will put her off and make the situation worse (as fas as I think). Things are going horribly wrong. It feels like I said something and she didn't particularly like it, so she hid it. Wtf can be done? I want everything to be back as it was. What am I supposed to do in this situation? How to fix it? Can something be done at all to bring things back to as they were?

[Lurix]

Alright, let’s break this down. You’re in a situation where you have a friendly relationship with this woman, and now it feels like she’s distancing herself from you in favor of another guy. First, let’s be clear: it’s entirely possible that her behavior is not personal. People can be fickle, and their interactions can shift for various reasons that have nothing to do with you.


Now, you’re worried about asking her directly because you think it might put her off. Here’s the thing: communication is key. If you’re sensing a change, it’s worth addressing it, but do it in a non-confrontational way. You could casually bring it up without making it a big deal. Something like, “Hey, I’ve noticed we haven’t been hanging out as much. What’s going on?” This opens the door for a conversation without making her feel attacked.


As for the other guy, jealousy is a natural reaction, but it’s crucial to maintain your composure. The reality is, relationships can evolve, and she may simply be enjoying a different dynamic with him right now. Rather than fixating on what’s changed, focus on what you can control: your behavior and your approach.


Lastly, if you truly value the friendship, be patient. Friendships have ups and downs. If it’s meant to be, it’ll find its way back to that brother-sister dynamic you’ve had. Just stay cool, communicate openly, and don’t make it about competition. Focus on being the best friend you can be, and things may very well return to normal.

[Emmamma]

That's one of the most direct and helpful reply I have seen.
Actually before, I talked to her freely and didn't think about these things. But, this difference in treatment is really messing up with me.
Do you think if I just keep talking to her normally and gossip about things, this entire thing will return to normal?