Can 2 Boys Kiss Each Other?

Yes it is possible that 2 boys can kiss each other, weather they both want to is an other question entirely.
If you are asking this question because it is something you are curious about trying yourself thats ok people of all ages think about doing things like that its a part of growing up and learning about life. Just because you are thinking about what it would be like it doesnt mean you have to go through with it. It does not mean that you are gay just because you are thinking about it either.
Make sure you are doing things for the right reason before you go and do anything that you might regret.
Hope it works out for you