Md. Code, Family Law § 3–102

(a) Unless the individual is pregnant, an individual:

(1) has no cause of action for breach of promise to marry; and

(2) may not bring an action for breach of promise to marry regardless of where the cause of action arose.

(b) In an action for damages for breach of promise to marry, a judgment for the plaintiff may not be entered on the uncorroborated testimony of the plaintiff.