I have a huge crush on this waiter. how do I approach him?

so I've gone to this place 3 times now. only the first time did he wait my table and my brother was the one he spoke to, but the other times i see him at the front (I've never been there alone and its almost always to order takeaway than sit) and he looked at me a little the second time i went there, the third time he looked at me while passing by and then walked behind me it felt like it was in slow motion. How do i approach him? the problem is im in a foreign country I don't know how the language of but im pretty sure he speaks English? i also dont want to go up to him and end up interrupting him as he's working so im not sure what to do

I have a huge crush on this waiter. how do I approach him?
Post Opinion