This guy always seems to have his eye on me and when we make eye contact, he smiles at me. At work he always seems to be around especially when opportunities present itself where I might need help with something then goes to my aid. He also playfully teases me a little but I work around all males where we all tease each other all day everyday. The only thing truly obvious to me was the one time he saw me out of uniform he literally stopped in his tracks. But, everyone else was a little shocked also.