Are these signs that he likes me?

Today I went to my best friends house. My crush was there also. Hes not very talkative but today he was really chatty w/ me. When we were walking to go swim he told me jokes the whole time and it was like he was totally different towards me today. We stopped @ his house. When we were there a few more friends stopped by. he was talkin with them and all of a sudden he came out of no where and "took me hostage" and was just messin around. Then we walked down to the dam where we were lookin @ crayfish and my best friend and his gf left me and my crush by ourselves. He was skippin rocks (ima not very good) and he taught me how to skip them and he he asked me if I was still going out w/ my ex. Then we were walkin on the rocks and I slipped and got my jeans all gross so I took them off cause i had shorts on under and the whole time he was staring and smiling when i was taken of my jeans. We thn went back to my friends house and went swimmin in his pool. as soon as I got in my crush kept grabbing me around my waist and trying to throw me under the water and kept staring @ me. Ima srry this is long but do you think that he likes me?? Please help!! thanks :DD