What to do not mess up when you really liked the girl?

All you got to do with women for them not to lose interest. Unfortunately, whatever you do or whether you do it correctly women still can lose interest because they have way too many options. And life is random and people meet people. So just don’t over-pursue if she’s showing you a lot of interest don’t equal her because women lose interest when you’re mirroring her. Initiate contact and ask her out but don’t do anything more than that.