RoyxRiza
It was clear to the office that Roy Mustang and Riza Hawkeye were not in love with each other. The two of them were just too different as people.
In short, Roy is a lazy man. He didn't like approving of things or sitting still all day. Roy needed adventure in his life. Adventure and a woman at his side in a tight miniskirt.
On the outside co-workers saw him as a womanizer. Some even went as far as to call the man sleazy. In truth Roy really wanted a lady who would just love him unconditionally and live the rest of her life with him. If she were beautiful and bubbled on about how great he was that would also be nice.
Unlike Roy, Riza did her work as soon as she got it. Riza's mother told her all the time that it was better to do important things now better than later. Then again her mother also constantly told her to settle down and start a family. Riza didn't let that bother her though.
An outsider would call her the perfect soldier. Calm exterior and level headed interior. Most things didn't faze her and when she had an assignment she followed through with hit, no matter the order. Chances are an outsider would fear her, but she also had a tender side that hardly anyone had the chance to see.
So the day Havoc, Farman, Fuery, and Breda all received invitations to the Mustang-Hawkeye wedding none of them would believe it. Even after Riza showed them the engagement ring they refused to believe it. Only when they saw it did it finally hit them.
Roy gave up his playboy attitude and Riza vowed to stand by his side to whatever end.
-squeezes chest-
Corny ending alert!