May 6 (Reuters) - Square Inc reported a profit for the first quarter on Thursday, boosted by a surge in transactions on its peer-to-peer payment service Cash App. The payments firm, led by Twitter Inc top boss Jack Dorsey, posted a net income of $39.01 million, or 8 cents per share, for the quarter ended March, compared with a loss of $105.9 million, or 24 cents per share, a year earlier. (Reporting by Noor Zainab Hussain and Niket Nishant in Bengaluru; Editing by Aditya Soni) Our Standards: The Thomson Reuters Trust Principles.