Hymen and vagina

my boyfriend wants to have sex with me but I have this query that
the vagina opening becomes large after intercourse but does it comes to its normal size after few days or will it remain wide open and is the hymen present at the opening of the vagina...

or is it deep inside ??will inserting finger will make it split??
please help...

your vagina expands when your aroused
it can expand a bit to accomodate a pen*s
so no matter what size he is, its exteemply likley that hell be able to fit inside you
it doesnt grow bigger or anything
it just stretches to fit the pen*s in
the hymen can be broken from other things as well
e.g tampons, fingers, sex toys, sports, horseriding
...if yours hasnt been broken yet then sex will most likley break it
its a think peice of skin, some girls can have thicker ones though
and you might expeirience some bleeding when its torn
not all girls do though
your hymen though wont interfear with him getting in you
so you dont need to try to break it before you have sex if thats what your trying to do