you already screwed up (Score 1)

You've already violated a basic workplace rule, which is never tell a current employer that you have entertained an offer from another employer unless you are 100% prepared to leave. If you really like the current job but were just dissatisfied with the money, you should have asked for a raise there before interviewing elsewhere. But OK, you took that step, not a problem. But once you tell the current employer that you're looking outside, you are a marked man. Take the other job, you have no choice now.