Hi TS,
I think in this case you should give up.
Whilst it is very romantic to persevere to show you truly love
her....... in most cases it'll only make her annoyed.
What happens next is she will avoid you. Cause she knows what
you are after... and she does not want to be with you.
What you should do is to make new girl friends and possibly try
to strategise your questions with girls the next time.
For starters when in doubt i think it is not a good idea to pop
any girl the big question on V day.
For now concentrate on healing your hurt. Go get some new
clothes do abit of gym and get back some ego.... then move on to
the next target tiger 
Regards
Genie99