Bobby Drake, AKA Iceman, is set to come out of the closet in an upcoming issue of X-Men. Although the character has dated many women in the past, it will soon be revealed that the character is gay.
Iceman wouldn't be the first Marvel leading man to come out; Northstar came out in the early '90s in Alpha Flight #106. At the time it wasn't an easy task and writer Scott Lobdell had to fight to get the line "I am gay" approved before the issue came out. Bobby's coming out is more pull than open reveal (see the leaked panels below), but in the end he accepts that the truth is out and is okay with it, even going so far as to make a joke.