MG meaning in Messaging ?

Answer: What is My Guy mean?

"My Guy" is a 1964 hit single by Mary Wells for the Motown label. Written and produced by Smokey Robinson of The Miracles, the song is a woman's rejection of a sexual advance and affirmation of her fidelity to her boyfriend, who is her ideal and with whom she is happy, despite his ordinary physique and looks. ("There's not a man today who could take me away from my guy").

reference

Full Form	Category
Morning Glory	Academic & Science
Meteor Garden	Academic & Science
Megagram	Academic & Science
Microgrid	Academic & Science
Main Girder	Academic & Science
milligauss	Academic & Science
Malachite Green	Academic & Science
Matematicheska Gimnazia	Academic & Science
Megagauss	Academic & Science
Many Girls	Academic & Science
Maroon and Gold (school colors)	Academic & Science
Mirisah Games	Business
MaschinenGewehr	Business
Morgan Group, Inc.	Business
Master Glazier	Business
Memphis Group	Business
Metal Gear	Business
Music Group	Business
Musical Group	Business
Medical Group	Business
Marvel Graphics	Business
Magna International Incorporated	Business
Magnesium	Chemistry
Modified Gypsum	Chemistry
Mahatma Ghandi	Community
Mystery Guest	Community
Mahatma Gandhi	Community
Morton Goldberg	Community
Monsieur Gillenormand	Community
Mister Green	Community
Minister of the Gospel	Community
Medication Guru	Community
Management Group	Computer and Networking
Media Gateway	Computer and Networking
Meta Gaming	Computing
Madagascar (TLD)	Computing
Magina Group headquorters settle on Shenzhen Magina Technology	Computing
Mobile Gear	Computing
Managing Gigabytes	Computing
Mystic Gohan	Computing
Multiline Grep	Computing
Madagascar	Country Names
Minas Gerais, Brazil	Country Specific
Mesotrophic Grassland	Earth Science
Manufactured Goods	Electronics
Metal Gate	Electronics
Generic Module Source (modula-3)	File Type
Master Geometry	General
Morris Garage	General
Miracle Grade	General
Modified Gross	General
Marc Graham	General
Master Gamers	General
Meter Guage	General
Motor Generator	General
Multiple Godzillas	General
Mini Grand	General
Manang Genie	General
Mizuno Gakuen	General
Mystery Garage	General
Magic Gate	General
My Girl	General
Match Guns	General
Marketing Guru	General
Master Greenkeeper	General
Mikhail Gregory	General
Million Gauss	General
The Multivariate Garch	General
Metal Gears	General
My Grandma	General
Martians Girlfriend	General
Machine God	General
Money Guzzler	General
Mini Grid	General
Michael Gloomburg	General
More Giving	General
Mould Growth	General
Morris George	General
Manuka Honey	General
Mathew Gilbert	General
Mark George	General
Mort's Great	General
Maraveedu Gopal	General
Machine Gloss	General
Meilleur Grimper	General
The Missouri Group	General
Mucho Grande	General
Mass Graves	General
Mickys Girl	General
Martini Girl	General
Mary Grace	General
Mickey's Girl	General
Mostly Gross	General
Middle Grade	General
Military and Government	Governmental
Military Green	Governmental
Might Go	Governmental
Medal for Gallantry	Governmental
Magina Group	Governmental
Major Gaffes	Governmental
More Grief	Governmental
Metropolitan Guard	Governmental
Major General - Army	Governmental
Mass Gathering	Governmental
MODELGRAM	Indian Railway Station
Modern Greece	International
Marketing Goddess	Jobs
Master Gardener	Jobs
Man of God	Jobs
Metre Gauge	Maths
Megagrams	Measurement Unit
Milligrams	Measurement Unit
Myasthenia Gravis	Medical
Milligram - 0.001 Gram	Medical
Muscle Group	Medical
Monoglycerides	Medical
Michaelis–Gutmann	Medical
Medical Genetics	Medical
Micoplasma Gallisepticum	Medical
Malignant Glioma	Medical
My Guess	Messaging
My Guy	Messaging
Morris Garages	Messaging
Machine Gun	Military and Defence
Major General	Military and Defence
Message Generator	Military and Defence
Match Game	News & Entertainment
Mobile and Gulf Railroad	Regional
Minas Gerais	Regional
Malagasy	Regional
Middle Gimbal	Space Science
Milligram	Space Science
Mobile Generator	Space Science
Minimum Guarantee	Telecommunication
Master Group	Telecommunication
Champion Air	Transport & Travel
Monte Generoso	Transport & Travel