At first I did think Marluxia was a girl, when he took his hood off in the GBA game I was like "Oh sweet another chick enemy!" Then I saw his little sprite picture thingy and thought "Oohoohh thats a dude nvm XD"
I don't think he looks like a girl anymore, I've kinda grown on him and he's pretty cool XD But I do like to make fun of his flower powers, not saying he's gay or anything (even though the line "Marluxia rocked back and forth hugging his barbies under the table, muttering something about not being gay.." was used in my Org13 Road Trip, but that was just for fun XD) Like someone on the Otaku said (in a picture of MarMar) "Marluxia just wanted you all to know that he is not gay, he just likes flowers. It's the 2000's dammit!"
And I even read a fanfic where Marluxia fell in love with Namine. HE'S NOT GAY! XD