The poster of the 10th response is responsible for the next topic. Since this hasn't happened:
10 in which the FL, early in the drama, goes to meet her boyfriend with the expectation that he will be proposing, only to find that she is being dumped. OR this could be the ML, planning to propose, who discovers that he is being dumped. (The FL might also be planning to propose, to keep this equal opportunity.) The main thing is that they believed everything was going really well. [amended slightly]