Does age gap matters?

I met someone from the net today in person. She is young gal so I didnt thought much other than to want to know more people.

We chatted for quite a bit.... from 630 to 9pm, it was quite well and fortunately not very awkward. However, there was a little "heat" when she asked me about age gap. It started when I was talking about teachers should not be dating or having affair when their students. Then she started to ask what if both younger and older are no longer in school, and why I object big age gap and what is my acceptable age gap... wow I was feeling alittle cornered during for a short moment...then she told me she was seeing someone who was 16yrs older than her, we went on to talk about other stuffs. It was interesting, there after I realised it was already 9pm so I suggested to call it a night... I waited with her for her train and we ended with a good note to keep in contact.

Out of politeness, I send sms to thank her for a pleasant night out. I was surprised that she replied that she was kinda affected that she forgotten there are people who do not like very young gals as partner and that she was looking for a older partner.

I really didnt know what to say but to reply that I too forgotten there are young gals who want to be with much older partners.....

The truth is I never felt comfortable for big age gap... and find it quite hard to believe...
Anyway that's just me...