I want to start by saying that I love my girlfriend very much. There are no words to express everything I feel about her. She is my most precious, valuable and close person, and the thought that I could lose her scares me a lot. Our relationship started off great - she was very enthusiastic and bright in communication, constantly initiating conversations that lasted for hours, was very supportive, joked, everything felt relaxed, we constantly talked about how much we loved each other, that we were made for each other and how we wanted to build a future together. It really was the perfect relationship that I imagined as a lonely teenager. An incredibly healthy relationship, in which both parties invested equally. But lately this seems to have changed,
A couple of weeks ago, she suddenly became distant and turned into a dry texter. It seemed to me that she began to answer without enthusiasm and desire, as if she was answering just for the sake of it. The communication itself became somehow passive. I try to fix this and write the same way as before, but in response she writes only a few words, without expressing any interest in what I write and tell. If I write several messages, she will very briefly answer only the last one, ignoring all the others, often limiting herself to a single "lol" ... I also stopped feeling and receiving support regarding my health and job, to which she also responds dry. I am now the only one showing interest in communication, enthusiasm and care in our relationship. I am the only one giving compliments. She regularly tells me that she loves me, but I just ... don't feel it. Compared to how it was before, it seems cold, and again looks like just words for the sake of it. At the same time, everything seems normal on dates. She smiles, we kiss and hug, talk. However, there are noticeable changes here too. Previously, she was very enthusiastic about every meeting and was bursting with joy, but now her reaction is pretty much indifferent and I am sure that if I do not offer to go out, she will not say anything and will not offer it herself.
She is often online, but does not write to me. This suggests that I am the only one with whom she communicates with such a disinterested manner. She can also ignore my texts. This does not happen very often, but it happens, and it is noticeable that she is texting someone else at the same time as me and gives this someone else more preference than me. I do not suspect her of cheating and I know that she chats with her friends. As a person who despises cheating and people who cheat on their partners, she is definitely not like that. But I strongly suspect her of losing interest in me and allowing our relationship to cease to be a priority for her. Because of all these dry texts and passive replies, sometimes I feel uncomfortable starting a conversation with her and I can't get rid of the thought that I'm imposing myself on her. Mentally, it's killing me, I've been feeling very depressed and down lately. It's sad to realize that I'm in a relationship but I feel lonely.
I know that I'm insecure and anxious. I have problems with this. But in this case, it looks like it's not about my GAD and nervous thoughts... I just don't know what to do anymore. I try to be communicative and have expressed my concerns a couple of times, but every time she says that everything is fine, and every time I think that it is not sincere and she is distancing herself from me.
TL;DR: my girlfriend has become distant and doesn't seem to be interested in me and our relationship as before, with me being the only one who invests in the relationship, but does not receive the same in return.