When Yoda said "Do or do not, there is no Try", he didn't say anything that we didn't know already. He put into words the reason why the Jedi kept failing, a simple but harsh truth delivered in great style and hence the profound impact. Like young Skywalker, we use and sometimes abuse the term 'trying to do' whenever we are too lazy to bother doing it or put in more effort. Assuming this line of thought to be right, it then should be safe to make a statement like 'one is either in love or not in love, there is no middle stage', ergo, someone saying she is somewhere in between, must be understood as merely excusing herself, (but is it?)