Gay son???

My son is 6. Since he has been able to choose he has chosen 'girl' stuff. Loves the Elsa movie and song. Likes kids girl play sets n toys. Stops to look at commercials targeting girls. Has told my wife he likes boys. Has blurted out he wants to kiss a boy. Struts around like a female, hips swinging out when he thinks i am not looking. When looking at toys r us catalog he lingers on girls section. His bros give him hard time when they catch him admiring girl toys and watch princess cartoons.Early on i tried to divert to boys stuff but realized this was wrong when his bros gave him crap. His bros now get a very stern wag of the finger when they tease him. I tell em all what they want to play with, want to watch is ok. Doesn't matter if boy or girl cartoon, toy, etc. when i take him to toy stores he is embarrassed or shy about looking at girls section.I feel like i made him think i don't approve. It hurts to think that i probably make him feel i disapprove of HIM. I'm a live let live person. I have a gay bro but didn't know till few years ago and it didn't matter to me. So i know I'm cool and not just saying it.Gay or straight my son is still my baby. How do i make him feel cool with himself and around me and his bros? I don't want him to feel like he has to keep this a secret. I know he is still young and it may be a phase. But just incase.