I 20M am talking to my friend 20F who also happens to have a boyfriend. Basically, we used to go gym with eachother and we’d go on dates after, nothing ever came of it but we happen to work with eachother and are friends. She all of a sudden stopped replying to my texts so avoided talking to her at work, she then cut everyone off after I cut her off, she became incredibly miserable and hard to work with, and she doesn’t talk to anyone now. I do not understand.