Best friend got a boyfriend

And now she barely acknowledges me. We used to try to hang out on days off/free time just fucking around to kill some time, but now she doesn't even respond to texts, or will a week later. We work together right now (I got a better job so that'll change) and we would go to the gym but coronas got that knocked out so we won't be hanging probably at all. She made fun of people who drops everything for a guy, and yet here she goes. he was supposed to be a third friend to our group but he asked her out and that ruined things. And theyve known each other for a month and hes already said he loved her.

I have no friends other than the guy I've been seeing for awhile and a gamer friend lol so I have nobody to really vent to any more in the way I do with her.

Anyone else go through this / how to cope with it?