A hot (usually younger) male with the ability to make women grin from ear to ear when thinking about them. Usually characterised by a cute smile and dimples, they are genuine and caring partners who can turn your world upside down. In fact, the acronym JDB actually stands for Joyously Delicious Boy.
'Gosh, I can't believe how lucky I am to have bagged myself such a JDB!'
'My God, that JDB was so into you last night - jealous!'