Friend group/girl drama at uni and a boy?

[Anonymous]

Sorry guys, this is going to be long post and rant. At the beginning of the year, me and one of my flatmate (let's call her A) started bonding very quickly and soon became friends during freshers week as I invited her with my friends to go to parties/freshers events together. A is doing masters. Soon she joined my friend group and we had common friends with me and my group also joining her coursemates. This wasn't only for freshers, this followed weeks after freshers. Flatmate A started talking to and spending time with two other girls in my house which I was happy about. But towards the end of October, Flatmate A started ditching me completely, making plans with the two other girls behind my back and never inviting me. Then we made up again. Then suddenly she started leaving me out again after Christmas, by going to parties and stuff and never inviting me. Any plans I made with her and my friends, she would say she's busy, but then make plans with the other girl. She is also acting cold towards me for no reason. I made so much effort to keep the friendship going, I always initiated conversations and plans. I have done nothing wrong, because I asked A why she is doing this and she said she doesn't have to invite me if she doesn't want to. When we were friends I felt like I clicked with her and we got really close, which is what I miss.

To top this off, during a freshers party, I met a boy in Flatmate A's course. He is one of her friends. We hit it off that night, started talking and dancing. And we ended up holding hands. And then making out at his place where the after party was. I liked him too. He was being intimate with me and telling me he would love to get to know me. But after 4 days, he said he didn't want to take this further and only wanted the one night thing. So I thought maybe I should start off by trying to be just friends with him first. But I only see him if I am at social gatherings/parties flatmate A organises or is going to.

[ShadowMonarch]

So there are two parts here...
1. So you're concerned about her behaviour with you...
These days people just be like that without no reason... to be honest I also have a class mate that I don't like and for no reason... but I get a feeling that maybe he is better than me at studies... So the point is that there could be a reason that she dislikes you... Confronting her could be the solution... are maybe ask a friend to ask her why is she behaving like this.

2. You think that boy could be interlinked with you friend...
There is a high probability that she could be involved...
But again some men are just shit... they just want to have sex and disappear..

[Asker]

Thanks for the advice! I'm thinking about talking to her about it in a way where i'm expressing my concern but without offending her.