What makes Romeo a genuine tragic hero?

A tragic hero is generally a central or main character in
a work who causes their own downfall, demise, or tragedy. Readers can justifiably
consider Romeo the tragic hero for several reasons. First, he knowingly entered into a
secret relationship with the daughter of his father's arch enemy. This was poor decision
number one. Next, Romeo married her with great speed and before he could even make it to
the bedroom that evening, he stopped off to hang with the boys. This was unfortunate
because he made a decision that jeapordized his relationship with Juliet even further:
out of revenge for one of his friends, he killed Juliet's cousin. This was poor decision
number two. Finally, near the end, the Friar and Juliet work out a plan to get the
lovers together. It appears as if they will be able to work things out. But, Romeo gets
some bad information and acts irrationally on it. Romeo, believing Juliet dead, kills
himself right in front of her awakening body. This completes his cycle of bad decisions
and solidifies his ability to be a tragic hero that fits the definition greater than
most any character in history.