Well, I'll list 3 things that I've been told by others...
1) I've been told I can be & am cold most of the times... I always thought of myself as caring & warm person... In my own head, I'm thinking I don't wanna waste someone else's time by being around the bush so answers to questions & reactions to some situations can come across as being "cold"...
2) somewhat related to the first one, nothing much really surprises me anymore... That could explain why I have somewhat of a "calm" reactions to a very chaotic situations hence coming across as being "cold hearted"...
3) I hate over-drawn explanations... I used to get into arguments with my ex-girlfriend over this all the time... Once, I asked her, "You wanna go get something to eat with me?" She says, "Well, I was talking to my mom few hours ago & she mentioned something about going shopping and...." So I said in the middle of her sentence, "Is that a no?" I guess in hind sight, she was trying to say no in a nice way so I don't take an offense or get my feelings hurt thinking she didn't wanna hang out with me... Turns out her mom invited her out for lunch for just 2 of them... Even if she said, "yes but I can't" I would've understood... My response would've been, "Oh, ok... May be next time..." It's. It like I was gonna give her a hard time but I can see how she didn't want me to think she was just being rude... Even this answer might be little over drawn but hey, I'm learning here, lol...