So I've been seeing this girl for the past two months. I went on a short vacation two weeks ago. When I got back, this girl asked me if I slept with anyone else while I was away (I didn't)

In this situation, is it best to

a) Dodge the question and keep it ambiguous whether I did or not

b) lie and say that I did sleep with other girls (to ferment jealousy/preselection)

c) tell the truth and say that I didn't

I feel like admitting that I didn't get laid on vacation will, at a subconscious (if not conscious) level, make her lose sexual/romantic desire.

What's TRP's take?