First love

I think I'm in love with my boyfriend but I don't know if he feels the same way...I've never been in love before so there are times when I get excited thinking about it and it makes me just want to tell him, but then there are times when I don't want to tell him because of what his reaction would be. I don't want to scare him off but I don't want to make the mistake of not even telling. Should I just tell him and see where things go from there or just wait it out ?