Best posts made by nonchalant9

I have a boyfriend and I opened his social media account. I was reading old messages in his messenger account and I've red that he was flirting with someone that time. I am still not a part of his life but he haven't talk about that girl to me. I've red that he has someone special to him that time yet he's still flirting with the girl and I guess something happened to them yet he told me he's still virgin. I guess it's a red flag. What do you guys think?? What's your insight about this situation?