i don't know you and don't really have the tact to say this without sounding beyatchy...
that being said...
why do you assume that all men want more than one date with you? if you are really as relationship challenged as you say... they might never call you!!!!
stop worrying about how you will turn them down and start worrying about how you will have fun and how you can have fun with them
i don't think the goal of a date shold be love and lifelong commitment