In episode two of 2NE1TV, the Big Bang members were asked to talk about 2NE1 members. G-Dragon of course talked about Park Bom. You can tell by his verbal actions that he was nervous about talking about her, look at how he touches the back of his neck when asked about Park Bom!

This is what G-Dragon said about her...
When I first heard her sing it was very... ah... even now it has left a deep impression on me.

Here is EP2 with ENG SUBS - starts at around 14:00
credit royalacessubs