How to keep this boy around forever?

ok well me and this boy have liked eachother for about a month now..
and he says he is starting to love me!! and I like him a lot too..
and well I want him to stay around FORVEER!
how do I do that??

if you too are meant to bre together you will but id advise keeping your relationship with him interesting and unexpected so he has a reason to stay surprise him often