Pisces girls: what do you think if I'm always by your side?

There's a pisces girl i like and suspect may like me (but i really dont know). I always try to be by her side and talk to her when I see her, but I never know whether or not to do it or not. Some times, she seems to like my company, other times she sort of is a bit elusive and tries to break off to go on her own. I don't want to seem clingy, but at the same time I love being around her and want to show her I'll always support her.