Search Results: quiet and shy around him

This guy I work with (we met about three weeks ago, let's call him jake) comes across as being loud, confident and will flirt with girls. He acts "normal" around me most times but some moments he would act shy or just weird. Like he would stare at me and get kind of quiet. Sometimes he will pretend I'm not there. This one time I has asked a coworker if he could help me with something. When I asked him to help me, Jake was kind of behind us watching. And my coworker that I asked for help had something of Jakes so he asked him what to do with it and Jake just said to drop it. As Jake said that, he turned around and walked away. He seemed really flustered and annoyed. Another time in mid conversation Jake smiled and looked down, acting all shy. So why do y'all think Jake would act like this. 80 percent of the time he treats me like anyone else and 20 preceding t of the time he treats me weird. Why would a confident guy act like this? What does it mean? Help! Thanks guys

Also, one important thing. There is this other girl we work with and Jake flirts/talks to/hangs around her all the time. Other people have noticed it too. He is not at all shy with her so maybe he just sees her as a friend? He is very confident with her. So I can't tell if he is into her or if he likes me or maybe he just hates me, I don't know. He also seems to give me secretive side glances like he wants to know where I am at all times. I'm stuck! Haha thanks!