I'm not a very loud person, but not too shy. Sometimes i just don't have the energy to express myself loudly or fun. I think i get boring sometimes. How can i change that attitude?
Relax and have fun, let you'r self go. Trust me no man wants you to hold it in and be unconfortable. Talk to him. See what he likes. How he can make you feel good and confortable you know?
Not everyone needs to be loud and excited all the time to be fun. Your friends and your BF like you for a reason. You may not need to change anything at all.