Ok so, I've started to work part time at a nearby cafe just to get some tips and I love working there- my colleagues are really kind and helpful. 

The cafe is run by a family of 3- mother, and two sons and then there are  4 other employees too, i became really close to the two sons (Let's call them A and B) and one of the employee girls. (Let's call her C)

After a month of working at the cafe, I started to like B a lot- he was always so helpful and quiet and I would catch him looking at me time to time and then he'd look down embarrassed 

but just yesterday- A confessed to me, I have no idea what to do do because A is really bubbly, funny and the one who lights the cafe up and he seems to like me a lot because he would always congratulate me for the simplest things- but I don't like A, I like B :(

and the real problem is that C seems to like A too because she's always telling me bla bla bla about A all the time 

I need help , what do I do?