Should i message him on facebook?

[Kimberly]

theres this guy im interested in.& i think he is interested in me bt im not sure..well i been around him 4 times i believe..the first time it was me him and two other guys plus my bestfriend and he was quiet bt so am i then the second time he was trying to make conversation with me.. bt of course i shyed away..third time we talked a bit then right after that we became friends on facebook and he likes all my pictures i like his as well..the last time we were around eachother me and my bestfriend walked in the room he like look at kimmi (my nick name) so the whole time he stared at me at one point we locked eyes and smiled my friend said she think he likes me by the way he looked at me...& the way he was talking to me what should i do..i dont want to make a complete fool of myself if he doesnt think of me in that way..should i just wait to see if he makes a move..or go for it