I have seen option 3 happening and i have heard of option
1.
Option 1 happens because of option 2.
It depends on the situation and the level of acceptance after the
incident. Generally, both parties might feel awkward. Either the
discover the underlying feelings for each other and end up as
couple or they treat one night stand as nothing but pleasure.
There is another option: 4 )There is baby born out of
wedlock.