I was totally in the same exact situation you were in. I'm 16 and I was in a small relationship with one of my co-workers (I'm a lifeguard). I was really into her, she was gorgeous and funny. Though my gut gave me such a bad feeling about her. Though I chose to feel it out. In the end she thought we rushed into everything and ended it. Though like you her texts left me questioning her all the time. My advice is, ask your partners true feelings. Don't be Afraid not to, it will make you feel like you got that question that was poking the back of your brain right on outta there. Follow your feelings, do what will insure your happiness.