i'm upset 😢 a little story

so me and this girl were best friends in high school she use come to my house all the time we were so close. so as the years went she distanced herself especially with this new guy she with i try to talk to her and she just ingores me or doesn't really say anything:( i miss her but for some reason she acts werid now since she been with this new guy for some time... i stop trying to talk to her last year and i just wish we were friends again and close like we were... idk why she acts that way now but it does upset me i mean we were super close...