Does a guy ALWAYS have to flirt with you to show that he likes you!?

Depends on the mood. My mood, her mood, and just overall atmosphere. I sometimes won't flirt with a girl I like when it just doesn't feel right or the time isn't right. Like sometimes it can take a long to warm up and stuff. Sometimes I won't do it if I haven't talked to her for a while..etc.Sometimes I just don't feel like playing around. Don't look too far into it. I could like a girl A LOT and not flirt with her every time I see her.