So basically ive been speaking to this guy (lets name him Danny) for about a month (just on a casual/flirty type of level) and happened to develop feelings for him. My group of friends have known of this &of my feelings towards him, but recently he has been speaking to one of these friends. He sent her a message complementing her hair and she had told me about it. When I found out about this I was obvs annoyed with the guy and I assumed that my friend had stopped talking to him. However, today i was chilling with my friend and when she left the room, two snapchat notifications came up with 'Danny replayed your snap' and 'snapchat from danny'. When I came across this I was shocked and annoyed. This means that my friend obviously sent a snap to him and he sent one back, but the dilemma is I don't know if it was a one off or if they still continue to talk in secret. It has made me very paranoid about continuing my friendship with her and would be a massive slap in the face if a so called 'friend' would do this behind my back.