I think im in love or falling in love with my cousin.?

I have not seen my cousin in five years. About two months ago, we met up with each other including my aunt and other cousin. As soon as I met him, I felt comfortable and had a warm affection towards him. We started seeing each other once a week and later I started staying over at weekends. His 24 and I am 18. We both have so much in common and he told me that he tells me things "emotional things" that he does not even tells his mum. We stay up all night just talking and we both love just escaping into nature going for 20-mile hikes. We laugh, joke, and see beyond the surface straight into each other. This weekend we started getting closer e.g. hugging on the settee we both fell asleep in an embrace. I told him that people running through the back of my hair with their fingers relaxes me and he started doing it, and I also told him that I love people tickling my face and neck, which he was doing constantly this weekend. He kisses my head and at times runs his hand across my body. I felt so loved. We part around and play fight, build things together and he teaches me to cook. I Love to watch him cooking its kind of sensual. I would never sleep with him one its wrong and we both know it and it would ruin or at least complicate our relationship, let alone ruin my relationship with my aunt and other cousin. I asked him if he thought we were too close and he said that he had thought the same. I said I do not mind our closeness but what bothers me is the perception of other people. He told me he thought our relationship was ok and mentioned that us as a couple he understood would never happen but did not care and did not want to stop the closeness. This made me feel better. My point is I want to be with him all the time and have a relationship pretty much like a couple minus the element but I am terrified what our family will think and if they ume there is more going on. I am so conflicted at times, I do have ual feelings and they scare me. Can our relationship be cled as a friendship, is it wrong, what should I do?