Hmmm… Difficult Ragga, I had a very similar situation only last week – a “Facebook acquaintance*” messaged me and asked if I wanted to go on a date. I was very flattered – it’s a big deal for most women to pluck up the courage to ask a bloke out on a date, so an appropriate level of sensitivity is called for.
I was quite lucky in that I could tell her that I was seeing someone, and whilst it was in the early stages, I hoped it would progress. Because I had a watertight excuse, I told her that if it had been a few months earlier I would have jumped at the chance (I wouldn’t have, but I think it made her feel a bit better). Be careful with that though, if you leave the slightest ambiguity, she’ll keep asking – it’s human nature to take the positives from a situation like that rather than accept that they’re being rejected.
If she’s already a friend or work colleague, you can always say you’d rather not jeopardise the status quo, but if all else fails, go for the old “my heart is elsewhere” getout.
This doesn’t hold too true if she subsequently sees you chasing tail like a randy old alley cat, so use with caution.
*© Shibboleth 2013. Someone that added you as a friend that you probably wouldn’t even say hello to if you saw them in a pub…