If you've just found your ideal woman, read on - but be warned: This advice is going to cost you. For romance to blossom into a long-term relationship you have to have 22 meals out together, two holidays and spend at least £3,000 on gifts, according to researchers.If you've just found your ideal woman, read on - but be warned: This advice is going to cost you. For romance to blossom into a long-term relationship you have to have 22 meals out together, two holidays and spend at least £3,000 on gifts, according to researchers.