Have u ever feel this way?

U like someone so much but due to some situation ur can't be together... U like that someone so much that it makes u feel so nervous but yet u can be yourself around that someone. And somehow u feel that he may feel the same way but coz' of the some certain barrier that is cld not be broken, there's nothing u can do about it... And that makes u feel so frustrated and upset all at the same time... ??