so pretty much miscommunication. this is a skill that old people forgot to teach younger generation. This is why we have problems like this. She is young and doesn't know about love. Since they didn't say they are exclusive and just did it cuz of out the heat of the moment and didn't touch the subject, she began to overthink. It looks like the wolf boy is not just naive but slow when it comes to express with the right words what he wants. The girl is inexperience, naive but dumb cuz she consider herself as the mature and the one to take charge when she doesn't mean know what to do.
her friend is telling the true. she should talk to someone if she is so embarrass to tell this to the wolf boy.