Would you love to have married your high school sweetheart or would you find that too restrictive?

Some people marry their HS bf/gf right out of high school and stay married . They never or almost never got to date anyone else. Do you think dating only one person all your life is romantic or restrictive to a full life if you remain in love? Or do you think people should date lots of other people before tying the knot? And no; I never did this.