I have been with my boyfriend for 4.5 years, we have had one of the most amazing, happy, fun relationships and everyone can see how perfect we are for each other. We had been on an incredible holiday a month before (one of many) and as loved up as ever and both 28 and nearing 29. I was due to be moving in with him in a month (I already had tenants lined up for my flat), and he comes around to mine and tells me he loves me more than he could /has ever love(d) anyone but he just doesn't feel ready for the next step, and he is 99% of the way there but he has a 1% nagging doubt and he doesn't know what it is, but he just can't continue with me and string me along as he doesn't know if he can ever get there. He doesn't think it is fair on me and in all honesty he seems more confused than I am. It seems to have come completely out of the blue for both of us with absolutely no issues in the relationship. I am 100% in and I am completely devastated. I can't eat and I can't stop crying and when I am not I feel numb like I am in a hideous nightmare. Has this ever happened to anyone? What do I do?