SQL Server 2008 :: Loop Through Date Time Records To Find A Match From Multiple Other Date Time Records?

I'm looking for a way of taking a query which returns a set of date time fields (probable maximum of 20 rows) and looping through each value to see if it exists in a separate table.

E.g.

Query 1

Select ID, Person, ProposedEvent, DayField, TimeField
from MyOptions
where person = 'me'

Table

Select Person, ExistingEvent, DayField, TimeField
from MyTimetable
where person ='me'

Loop through Query 1 and if it finds ANY matching Dayfield AND Timefield in Query/Table 2, return the ProposedEvent (just as a message, the loop could stop there), if no match a message saying all is fine can proceed to process form blah blah.

I'm essentially wanting somebody to select a bunch of events in a form, query 1 then finds all the days and times those events happen and check that none of them exist in the MyTimetable table.