girl if he didn't tell his friends about you for 7 years that's not a red flag it's a parade

Neither did his male friends, you say yourself they're surprised to find out that he's been in a relationship this entire time. None of his friends knew. What does that say to you? So, his comment to his friend in the text about being "in a relationship now" tells us something important here: he did not think he was in a relationship until very recently. YOU thought you were in a relationship, he thought you were...something, but a) nothing he thought was worth mentioning to his friends and b) nothing that kept him from having flings with other people. Only you can decide what that means to you, the copy of his text really does sound like he's sincere about you and is telling people that his past - whatever that was - is over, but I really think the two of you have very very different understandings of what the last seven years of your lives have been. Were you telling your friends about him? Did you introduce them? I get that you were LDR but surely you visited, this wasn't entirely an online situation, correct? Did you ever wonder why you had not been introduced to his friends? That would wear itself thin with me very, very quickly and I would not tolerate it for seven months never mind seven years.