The other day I was on the bus and this girl awkwardly walked up to me and started talking to me. She then gave me her number. I wasn't really interested in interacting more with her, so I pretended to write it down on my phone. I don't think she noticed, but I feel really bad about it.
How should one handle this in the future? I am not particularly skilled in talking to unknown people, much less unknown women. This probably happens to women a lot more than men, but the same answers should apply to men.