It means you were not appreciated. Taken for granted means to be treated like you would stay around forever despite someone treating you wrong. It's not appreciating or understanding the importance of something or someone
For granted: it means for example your arm (lets say your left one) that you couldn't move it at all, you would then start to realize how much you needed to you that arm and you never really realized...
Being taken with someone has the connotation of being infatuated with that person. It almost always is at least suggestive of some sexual interest, although it can refer to other kinds of interest as...