Hey everyone, I really appreciate the responses. Here's the latest update(a bit long as its been a few days):
I did something out of my character, and I confronted the girl who sent the messages and also the naked picture. I did this solely based on the reason that she knew good and well we were in a relationship, and still continued to be the homewrecker. I did not threaten her in any way, my message to her was congratulatory: I told her I knew what was going on, and if she wanted him that bad, he was all hers. She of course denied any wrongdoing UNTIL i sent her the screenshots as proof. After 15 minutes, she still denied anything happened, but she also continued to act like a ratchet hoodrat, didn't take any responsibility for what she did, didnt apologize, and even called me names in the process. I found it funny that she was so upset. She also felt the need to tell me they used to date, which doesnt matter to me as it was YEARS ago. He apparently has cut off all communication with her(I made sure of that: he is on my cell phone account, and I was able to log into my account, blocked her and that teacher from calling or texting me or him ever again.) She tried to say "we can meet up and talk like grown women," but seeing how immature she is, it'd be a waste of time.
He is still apologizing, and still denies he cheated. I told him even IF he didn't have sex with anyone else, he shouldn't have allowed those conversations to get so out of control if these women are "headaches and have nothing to offer." I even asked him what he would do if the roles were switched. He said he'd be upset obviously, but would give me the BOD because we are with each other at the end of the night(uh...WHAT?) He went on and on about how he doesn't condone cheating because of his father cheating on his mom, and he was also cheated on by his son's mother. He hadn't had a serious relationship since his BM until he met me. He keeps saying he will do anything to fix his mistake and to get me back. He even suggested couples counseling, which is fine I guess, but at the same time, I'm not the one with the issues. He's essentially been kissing my *** all week, which honestly isn't out of his character. Up until Monday night, he never showed me any signs that he would be unfaithful, or that he couldn't be trusted period. I hate to admit it, but I thought he was a really good man until I saw what I saw. He said "the man you saw in those texts was not the real me. That was a man trying to be something he is not. I don't like not knowing who I'm going home to at night, and I've done all the exploring I can take. I want a family."
I confided in my mom, and she said something that is weird but makes sense at the same time: "People can do whatever they feel until there is the legality of marriage. You are either single, married, widowed, or divorced. Even though you were engaged, you have no legal ties to each other." Which is true, but I don't understand why people think like that. I'm also not going to be that chick who thinks "I don't care what he does, because he comes home to me at the end of the night." I'm sorry but I don't get that mentality, I'm not a celebrity and I'm not dating a rapper, LOL.
I had a nightmare the other night about all of this, and in the moment, I took his phone and checked it while he was sleep: checked his email, FB, and text messages. It was kind of too late as far as the email and FB, but I didn't find anymore evidence. Some of the messages are years old, and he had been spreading the word of our prior engagement. I did read the text messages he sent to his cousin and our roommate: it felt kinda good that he was and has been feeling like sh1t. We are still not together, but I do have several unanswered questions that can probably only be answered in a therapist-patient atmosphere:
1. If you were so happy in your relationship, why did entertain other women with these messages?
2. Why do you continue friendships/relationships with toxic people(women) that you refer to as "headaches" and "always contact you, complaining about their problems?"
3. What is it about these women that they cannot seem to let go of you YEARS after your relationship has ended? Why have you allowed them to get so comfortable?
4. You said the man writing those messages wasn't the man you really are, it was a man trying to be something he is not: who were you trying to be? Are you not content with the life you have?
Wow as I'm typing this, this sounds like a spin-off of the Mimi-Joseline-Steebie J. debacle...weird and yuck.