The woman has claimed that her partner was fuming as she was rushed to hospital for emergency treatment after she had a build-up of fluid around her hurt.
As a result, she missed the birth of her child and was 'devastated' despite the situation being out of her hands.
Taking to popular forum site Reddit, the anonymous user explained: "My girlfriend and I (both 26f) have a son who is just over a year old. And there was some major 'drama' during the birth.
"For some context, I have chronic heart problems and have been struggling with it since birth."
She went on: "I had surgery when I was an infant, another at seven, and another at 15. I haven't needed one since and have been doing well all around. When my girlfriend was six months pregnant, I got really, really ill and it took a massive toll on my lungs and heart. I pulled through but spent about a month in the hospital. I felt so awful that I couldn't be with my girlfriend (Jane) but she was super great with it.
"Then, two days before the due date, I was rushed into the hospital due to a build-up of fluid around my heart. I had to get the fluid removed asap. When the fluid was all out, my brother-in-law came to visit me and he told me Jane had given birth. I was both ecstatic and devastated.
"I had to spend the night under supervision but as soon as I was allowed to leave, I went to the maternity wing to see my girlfriend and baby. At the time, all negative emotions were smothered by our bundle of joy but over the months, Jane has been showing more and more signs of resentment towards me.
"It came to a head last night during our date night. I had the whole day planned; baby had gone to grandmas, her favourite takeout, got all her favourite movies ready to play, spa evening planned, etc. But she wasn't feeling any of it. I asked her what was wrong and she said she's angry at me for missing the birth.
"I'll admit, I didn't handle it as best as I wanted to, but we argued for a bit and I ended up calling her selfish for saying that. I asked her if she understood the severity of the situation and that I was very ill."
Seeking advice, she wrote: "She got up and said she wasn't going to let me patronise her and that she's never been disrespected like that before and that she's going to bed. Am I the a**hole?"
Since sharing her concerns online, the thread has raked in over 2,000 comments to date - where people assured her that she wasn't being unreasonable.
One person wrote: "Not the a**hole. Does your GF want you to die in order for her to have the perfect moment to tell her kid? You should have handled it more diplomatically but doesn't seem you are an a**hole."
A second agreed: "You could have died. She gave birth. Unless she had a very complicated pregnancy and childbirth I think your medical problems outweigh hers."
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