Falling in love 😰

So I've known this guy for two months and been dating for a month... And I know it seems super early rn and I get that but so far I adore him and I love everything about this guy... But I'm scared of falling in love again because I just have this fear one day I won't be good enough for him and someone better will come along. And I've talked to him about it and he swears that he wouldn't be with me if it were that case but idk I've been told that many times but I still have a fear that I will not always be good enough for him  so do I take the chance and fall or do I keep my walls up for more time?