appreciate

So yesterday was my first day to be allowed off base without the exception of my special pass for when my family came to visit. Some friends I've made here and I decided to go to the mall for a little while before we had to be back for early bed check because of our training this morning. But we were at a store and my friend was trying on a hat. She came and asked me what I thought and I told her that it looked pretty good. She then told me that was one of the first compliments I've given her. I've known her since I've gotten here a month or so ago and I haven't complimented her till now?! Wow, you have no idea how much of a jerk I felt I was. She's one of those people who between us we pick on each other...kind of like a brother/sister relationship and so this is why its never crossed my mind before. I don't know, but I need to change this. I can't have that being the only nice thing I've said to her. People need to know they are appreciated and loved. How will they ever know if they're friends don't tell them? How can I show them Jesus if I'm not showing his character?