Fishing to making out has gone all down hill

Ok here's what happened. I went to my lake a week ago with my friend Alex and his friend James came. So I thought James was really cute! We fished for about 2 hours and everything was fine. I thought James was really nice and sweet and stuff but i didn't know him that well. So a few days later we went to the lake again with a few more people and we were just fishing and stuff. Later James pulls me away to talk and I was like ok. So when he pulls me into the woods right behind our fishing spot he kisses me and we make out. Not really anything big happens just him putting his hand on my butt but no big deal. After that happened we all had to leave because it started to rain. I went home that night with my sister and I realized that I do have feelings for him which is bad because I don't have feelings for anyone! So today we all went fishing again and there was only 4 of us and me and James got split up from the rest of our people and I mean of course we are going to make out. When I went home tonight I got a call from my friend because I got him to talk to James for me and he told me something that made me want to cry more than anything. James told him that I was as good "hook up"!! What does that even mean! I was so nice around him I started to let my guard down around him! Like I don't even know what I should do!?! I mean I have theses huge feelings for him but I don't know what to do! I feel like I should just leave it but I don't know? Someone help!!!