My partner and I have been together 5 years. He’s never forgotten my birthday and, up until recently, I’d never missed his: 28th March. I’d ordered all his gifts and got his cards. We also booked to go away (Spain) for his birthday on the 29th. I asked if he wanted to go for a meal on his birthday before our flight and he declined saying “we can find somewhere in Spain”. We factored in Mother’s Day to (the 30th) I felt guilty as my mum was diagnosed with tonsil cancer the week before and I wouldn’t see her. I had such tunnel vision on the trip away that when I woke up on the 28th and he was working i forgot it was his birthday. It wasn’t until he got home at 1pm and said “you not gonna wish me happy birthday” that it hit me. I felt awful and I’m still devastated. I wrapped his gifts and spent time with him but the damage was done - he was hurt and fairly so. I apologised profusely and explained I’d not clicked the date. I asked how can I make it up to him and he said it’s not for him to tell me how to fix it. Fast forward to today. After hours of dirty looks when he thought I wasn’t looking I asked him what was going on. He asked if I was buying this extra present (It was my idea) and I confirmed but asked if he could send me the website and what site it was on. He lost it. He said he had to do everything for his birthday and he said he felt undervalued that I didn’t book a restaurant in Spain before we travelled and I explained I had researched some but didn’t want to reserve them in case they were actually bad or closed down (I thought we’d see them and he’d pick and I could pay but he didn’t like any of them so I felt glad I didn’t reserve before we travelled). I get IATA for forgetting but I’ve tried to explain to him I can’t turn back time and I will try and find a way to show him I value him. Edit: it was his 33rd birthday