Suitor

n. man who courts a woman; one who makes a petition, one who submits a request; plaintiff (Law); person or group that wishes to purchase a business

Courtship, traditionally the wooing of a female by a male that, for example, includes activities such as dating (dinner and a movie, a picnic, or general "hanging out"), along with other forms of activity, such as meeting online (also known as virtual dating), chatting on-line, sending text messages or picture messages, conversing over the phone, writing each other letters, and sending each other flowers, songs, and gifts. Courting usually involves getting to know the family (especially the parents) of the one you are courting. Most of the time courting will be done somewhere public, to lower the chances of anything going on between the couple. Some couples who court do not even kiss until marriage.
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Noun
1. a man who courts a woman; "a suer for the hand of the princess"
(synonym) suer, wooer
(hypernym) admirer, adorer
(hyponym) prince charming

(n.)
One who sues, petitions, or entreats; a petitioner; an applicant.
  

(n.)
One who sues or prosecutes a demand in court; a party to a suit, as a plaintiff, petitioner, etc.
  

(n.)
One who attends a court as plaintiff, defendant, petitioner, appellant, witness, juror, or the like.
  

(n.)
Especially, one who solicits a woman in marriage; a wooer; a lover.
  

Person bringing a suit before the Courts