NC and sorry long post
So I met a guy a while ago. We met through mutual friends and there was an instant attraction. Only issue was his partner had died just 6 months previously and he was still grieving for her. We became friends and would meet up for dinner/drinks etc whenever I was home (I work mainly in London). Nothing happened between us until a few months ago (almost a year since his GFs death) when he admitted he had feelings for me. We started dating taking things quite slowly. I tried to be there for him and let him do things at his pace. We had only really kissed up until a few nights ago. We had dinner and went back to his and were being intimate however when he came he called me by her name. Our names aren’t similar and he didn’t even realise what he had done. I got upset and left. When I told him that next day he was utterly devastated and apologised but I’m struggling to get over it. I know it’s only been a year she has been dead but he’s still thinking of her when it matters isn’t he? Or am I being totally unreasonable? I do think we have a future but im having a tough time imagining having sex with him again. WWYD?