Don't be offended if every day isn't Valentine's Day between you and your lender. You're in good company. According to an interesting piece in the Daily Mail, some lenders are paying borrowers as much as £25,000 to get rid of them.
Ah yes... paid to be somebody else's customer... the sign of a healthy mortgage sector. You're most likely to be made the offer if you're in negative equity (obviously); in which case... jump at it.