I don't know what's happening

So if a guy keeps looking at you and let's say you were sitting against a wall with some friends and the guy, let's call him "up"...sits with his friends on the same side just kinda away and then a week later he just sits right in front of you but just across the playground or whatever and he keeps staring and telling his friends to move ........ I don't want to get my hopes up and I don't know what to think at this point cause my friend thinks he's looking at her but everytimr she leaves he starts staring directly towards me and I don't know what to think(saying it again bcz I seriously don't) and it's a weird situation like why don't guys just straight forward go and make shit clear why do they do that 😐🤦‍♀️