Is it normal that i am involving in fondling, caressing my cousin sister?

My age is 24 and my uncle's daughter i.e my cousin sister is 16. She has a good boobs and a better one compared to other girls in her age. She also has sexual feelings. It all started when I was wantedly placed my erected dick over my track on her while she was playing in my mobile. She knew what I did and kept quit. From then, I used to touch her shoulders, arms, hips, neck and back often whenever she is near. I used to fondle all over her arms, neck and hips. I have even touched and squeezed her boobs 4 times. She never resist mostly when I touch her. She also likes it. However she would resist many times to my action of touching her boobs. I use to do these whenever I come home during holidays. She also likes. I can feel. I don't want to fuck her. I just like to play with her body. By fondling and caressing.
Is this normal?