What can I do if I seem cold? (personality wise)?

girl, dont' change yourself!!! If the people around you can't accept you the way you are... if they don't 'get you', than they are not compatible for you. Of course if you are rude... than that would be differernt, but even if you are just blunt.. sensitive people might not 'get you'. you are you for a reason. Think away... be as serious as you want. You are acceptable just the way you are as long as you are not harming anyone which it doesn't sound like you are, so just BE YOU.