strange feeling

I know him since years ago but I never noticed his existence until recently I spent quite a lot of times with him. He help me alot, he is nice and sweet too. His physical remind me a lot of my ex bf. Riding motorbike with him make me want to hold his hip, I used to do this when me and ex drove motorbike. His skin color, his muscly arm, smile and body smell almost similar. I couldnt stand it, I miss those. I dont know if I like this guy because he remind me of "him" or I just have the feeling for him?