Breaking up...

...a lot more difficult than we expected.  We only met up with this couple once, for drinks, and P and I thought the lack of chemistry was pretty clear. 

Well, I haven't told you that they've been in touch since, as I wanted to respectfully give them a private dismissal.  The first time they wrote, asking to meet up the very next weekend, I stalled in replying and then said we were busy.  Lame, I know, but I thought they might get the picture.  The next time, they were checking to see if we were up for getting together again the following weekend.  I knew I had to be more blunt about being uninterested, and came up with what I thought was the perfect reply:
I told them that, to be honest, we weren't ready to meet up with them again.  We were looking forward to a quiet weekend, and will get in touch if we decide that we want to get back into it again with them.  They reply that they look forward to seeing us soon.  hmm.  I figured the relationship would end with me never getting in touch again.

So last Thursday, they write again!  Hey!  What are you up to this weekend?  I really think my previous email was clear enough, and haven't replied back.  They're nice but I just didn't feel attracted.  The chick didn't put any effort into what she was wearing, and her guy came across as way too eager.  And did I mention that she got carded at the bar and didn't have a valid ID?  Very odd, and annoying, too.

Is there a code word I can use to break this off?  Please keep in mind there's nothing actually going on to break off!  I just really don't want to say "sorry, I would have to be REALLY, REALLY schnockered to get anywhere with you guys!"