It's better to figure out that it wouldn't work out now, then after you marry her.
What to do now? Whatever you want to.....because someday you'll probably have a lot less freedom. Just don't lock yourself in. Sit on your porch, drink a beer, have a cigar, and read a good book. Go fishing. Go out with your friends. Go to the shooting range. It's summertime...lots of festivals. Go camping. Do some project you've been meaning to get to (woodworking, write a book, whatever). Just remember that you have lots of friends and family online and off that are here for ya if you need them.