A Lil confused

So me and my BestFriend started to Officially dating…He has been with me for a while like he helped me when I needed him the most he's been there in good and bad always knows what to say And always make me smile……BUT……he been telling me that he is sure that. I can easily handle him as a BestFriend but he is not sure if I could as a BoyFriend because he came true to me and told me that as a BoyFriend he would be more jealous more protective but that sometimes he just starts to think stuff when I reply to his texts really late but he tells me that its because he cares alot for me and tht he loves me and I'm not gonna lie I love tht boy lol but something is like pushing me back to think bout being in a relationship with him