I'm not sure whether this is -strictly speaking- romantic, but my hub has NEVER got over it, and it was in 98. We'd had a week in Greece with his mum which he'd loved, and he'd always said we should go again. I got to thinking, and hatched a plan. I saved up a bit of money each month, so he wouldn't notice, from around November until May and used it to book a fortnight in Greece in June. I spoke to his boss and booked him some time off without him knowing, and swore his boss to secrecy. (Hub's job is not something he can just drop - he normally has to wind things down for a week or two first, so I really had to beg for the time!) I bought train tickets to Gatwick, booked a taxi to the station, bought the currency - everything. The evening before, I set up the video camera to capture the moment, and told him I wanted to tell him something. He was panic-struck! I gave him one clue at a time to try to guess - train ticket, atlas with a post-it on the Greece page etc, but he wasn't thinking straight and couldn't get it. (D'oh!) In the end I just told him where we were going next day. I had to give him the plane ticket before he'd believe me! I'd also had to promise his boss that he would go in for an hour or so next day to hand over to someone, so when he went in and found EVERYone knew, he was truly, genuinely speechless.
We had a fantastic time, and he has always said he will better it one day, and that I will never see it coming, but I'm still waiting....of course.....