Well what if you lose this guy and later some other guy shows up who likes you. Would it give you more confidence with the next guy?
The problem I see here is that guy likes you but he dont likes him as much so hes confidence is too low to be a man he wants to be for you. Other side of problem is that your confidence is low too and you can help the guy only to the level you can help yourself. Basicaly this one is common situation when boy likes girl and girl likes boy but both are too shy to say or do something that matters and couple is not created.
If you want to have boyfriend then be a girlfriend. Act and do things like you are already together.
Thinking neagativ will end with being alone. Instead thing about all the good things that might happen and associate positive outcomes with emotions. Think about these good emotions. It will be your reward and motivation to suckseed. When you think positive you are making positive energy around yourself. And this energy attract good things and positive results.
If you will tell someone that you like him it can help if miracle happens but better to say it directly to guy and you will get more direct results.
Also other people opinion shouldnt have effect on your decisions. In the end of life you cant say you are not where you or who you wanted to be because of this or that person. It all depends on you. When you love someone dont care what other people think about you two and just go on and express your feelings others will respect you just because you care about yourself and your feelings.
Once you love yourself other people dont have influence on you. Because you know who you are and you dont care they love you or not cause everything that you need is inside of you already. Thats the most importand thing. Take care of yourself and be okay about who you are. Dont critize yourself but see yourself as a friend. Think about all the good things why guy might like you what he sees in you. And you will fell in love with yourself. Then everything will be easy. Confidence is all you need.
Doubt kills more dreams than failure ever will