Strange female friendship

I'll start my story with the fact that my friends throughout my entire lifeI had three life : twofriends from school days with whom we still communicate, and one with whom we have known each other not so long ago, but have become so close that we miss them if we don’t see each other for at least one day, we call each other at night, share news and impressions. We became friends with her very easily.

She appeared with us six months ago. At that moment there were no girls in our team. From the moment she appeared, she fell into the soul of oneto a guy at work and they started dating. And everything would be fine if it weren’t for her complacency - I don’t understand what she wants or achieves. I'll just start tying it uprelationships with guys - and she’s right there, meeting them on social networks, and then talking about how nice she talks to them at night and dates.

We are on good terms with the colleague who is in love with her. He is now on a business trip, often calls and asks about her, since she does not test-antibiotic.com always pick up the phone. I am silent about her affairs, because I see that he loves her very much, and she is not indifferent to him. Only recently, I found out that she talks about their relationship and about me to others (supposedly I’m in love with her boyfriend, he just runs after her, and she doesn’t care about anything - a kind of “heartbreaker”). Of course, I was offended, but she’s not a little girl to come up with stuff and tell everyone about it!

Not long ago I started communicating with a guy, we met a couple of times, everything seemed serious. She, of course, met him, although she knows about my feelings for him. Recently he tells me that he asked her to marry himmarried ​All my feelings for him immediately cooled down.

And recently I started dating a colleague, she knows about everything, and then it all started: she came to work in a short dress, often goes to his office. I, of course, talked to her about all this, but she is adamant and responds to all my complaints that it is allegedly not her fault that test-antibiotic.com is so attractive to the opposite sex.

Of course, I don’t have such a spectacular appearance as hers, but no worse (although I’m a bit plump). But I just can’t figure out what it is, maybe there’s something wrong with me? Or is it notfriendship at all... Please look at my situation from the outside and advise what should I do?