u/Direct_Tone_2097

Before the text itself, I'd like to provide some context.

We are both university students and have been together since 2020. Throughout our relationship, things have generally been excellent. We talk a lot, laugh together, and have supported each other through difficult family situations. We are both reasonable people and communicate very well, so we've never had any major arguments or anything close to a breakup. I would say we're both somewhat jealous, but I always considered that a normal part of being emotionally invested in someone. University is also a major source of stress for both of us, especially during exam periods, since we're both in STEM fields.

The reason I first became suspicious was that I kept seeing a name on her phone that I didn't recognize. She seemed to be constantly texting this person and quickly responding to his messages. After several months, I decided to check a few of their recent messages and found their interactions inappropriate for what I would consider a normal friendship. I confronted her about it, and she allowed me to go through the messages together with her.

Here are the things that stood out to me:

- The overall tone and atmosphere of their conversations felt inappropriate. Nothing explicitly romantic or sexual was said, but some messages came across as flirtatious. They also used a nickname for each other that wasn't overtly inappropriate, yet would probably raise eyebrows if heard by other people. My girlfriend doesn't use special nicknames with anyone else except me. She also used a diminutive version of his name that seemed exclusive to him among her friends. The nickname they used was also very similar to a private nickname we have for each other, although she claims she never noticed the similarity.

- At the time I confronted her, they were texting constantly. Since we live together, she was communicating with him more than with anyone else. What makes this unusual is that she is generally very slow at replying to both male and female friends, sometimes taking days or even weeks. With him, however, her responses were almost always immediate.

- She sent him pictures of herself. They were not suggestive or explicit, but I still found it strange. Some were taken after she had showered, while others showed off new clothes she had bought, including outfits that revealed quite a bit of skin. This felt particularly odd because she is normally very shy about sending pictures like that and often refuses to send them to me when I ask. In his case, he didn't even have to ask.

- Throughout our relationship, I believed we were both happy together, and she often said so herself. Yet in her conversations with him, she frequently portrayed her life as overwhelmingly stressful and difficult, almost as if she were presenting a different version of herself. I found it difficult to understand why she seemed willing to be more emotionally vulnerable with someone she had known only briefly than with me or her close female friends.

- On one occasion, he sent her messages late at night while apparently drunk and then deleted them before she could read them. Her response surprised me. It felt openly flirtatious, something along the lines of: "What do we have here? Sending me drunk messages, [Name]?". She never mentioned this interaction to me.

- They discussed meeting up several times (potentially), but there were no messages confirming whether those meetings happened / there even were any. She denies that they ever went out alone together, but I have no way to verify that. What bothers me most is that I never knew any of this was happening.

- When I asked why they were talking so late into the night, she initially swore that they never did. Later, however, I found multiple conversations that continued past midnight only weeks before our discussion. The late-night messaging itself might not have bothered me as much if she hadn't lied about it. Until then, dishonesty had never been an issue in our relationship.

- At one point, she asked him whether he was ignoring her. When he said no, she replied that she was relieved because she had been very worried about it. She mentioned having a fragile ego and said she had discussed the situation with several of her female friends. This happened when they had known each other for, at most, two months. I found it strange to become so emotionally invested in someone so quickly.

- While we were reading the messages together, I was shocked and hurt. What surprised me even more was that instead of trying to reassure me, she became angry and dismissive. She insisted that everything I had read was completely normal behavior between friends and that nothing was inappropriate.

Ultimately, what hurts me the most is the secrecy. I only found out about this relationship by accident, and I feel that it could have continued indefinitely without my knowledge. During our discussion, she admitted that she had intentionally kept this friendship secret because she knew I would be jealous and would not approve of it. That admission was particularly painful because it felt as though she had a choice between being transparent with me and protecting this friendship, and she chose the latter.

Since then, she has provided very little insight into how she views the relationship or what she thinks about everything that happened. That also makes it difficult for me to present her side fairly. When I confronted her and we viewed the messages, she went to a university-related conference and had many days to think about it, yet when we talked about it afterwards, she had nothing to say. It just seems to me she does not care.

Individually, I could perhaps explain some of these points as insecurity on my part. However, taken together, they feel like too much to dismiss as mere coincidence. I would really appreciate a third-party perspective because I feel confused and don't have anyone else I can ask. Does this sound like a misunderstanding? Am I being gaslighted? Could this be considered emotional cheating?

TLDR: My girlfriend developed a secret, unusually close friendship with another man, involving constant messaging, emotional intimacy, special nicknames, photos, and behavior she normally reserved for me or did not show to others. Although there was no explicit romantic or sexual content, she hid the relationship, lied about parts of it, and became defensive when confronted, leaving me wondering whether this was emotional cheating or a misunderstanding.