WinryxAlphonse
Winry was the prettiest girl he knew. She was the only girl Alphonse ever kissed. It was an innocent kiss but his first kiss nonetheless. Winry hit him afterwards and he suffered a burning hand shaped welt for the day. Quiet possibly it was the best day of his life.
Earlier in the week Edward started a fight with Alphonse. He claimed that he would marry Winry because she loved him. Al was in the right mood for an argument. They spend most of the day bickering and ended it with a fight.
Eventually Al got the better of his bother and asked Winry to be his wife for the rest of forever. Al was turned down twice before just kissing her. It was so much fun he wanted to do it again.
Winry made it obvious she didn't want to kiss him in the first place.
Winry wouldn't marry him but he got a kiss. He wouldn't tell Edward though, how he got the welt. It would be his secret.