This guy that I really like is acting strange and I can't figure what he means
He works at the market and whenever I used to buy something he would laugh with me but one day his friend was there and as soon as they saw me they stopped talking and he turned to his friend and giggled and the next day he was very stiff with me and the day after he couldn't stop smiling at me but just yesterday as soon as I walked in he avoided any eye contact as if I wasn't there and acted really strange and while he was baging the stuff I bought another woman walked in and he looked in her eye and smiled and said how can I help you but with me he didn't say a word and tottally ignored me
Please answer me guys

Ignore him and see if he tries to get your attention. As long as he can see you are trying to get his attention he most likely will keep up the avoidance.

What it sounds to me like is the childish one week I show interest in one girl,
The next week I am interested in another so now I feel awkward about showing interest in the girl last week.
Whatever it is it sounds like some childish thing to me. Most times when two guys act this way giggling over a girl, it is more of a game than anything else.

Okay you need to pull back, it sounds as if he might just be being friendly and maybe your thinking it's something else. The next time you go to the store PLEASE walk in shop and leave ,I guarantee the next time he see'e you ( if he's interested) he will ask for your phone number, if not then you will get the hint. Good Luck. Besides life is too short for playing games find you a real man.