No, he only acts gay in episodes with him because he has a sexual feeling.
But Steiwe has been straight and in love with girls just as many times than being gay which would ruin the show.:/
i was wonderig about that too cuz in that one episode he acted like it, but in all the other ones, he didnt. plus he liked that one girl in the episode when he sang "Everything I do" just for her
I think hes bi-sexual but Stewie doesnt really know it as hes only a baby and doesnt understand things of that nature (sex).I know hes been in love before a few times with girls but with Brian its different. I know he loves Brian as a friend but some of his actions towards Brian are very suggestive. I think the suggestiveness started as him trying to wind Brian up and hes grown to enjoy doing it!I could be wrong though.
he is bisexual because in episode "the tan aquatic with steve zissou" when stewie thinks he is going to die he dances with brian and whispers "i love you" Brian asked what? and stewie said "I said olive juice" so I believe he does love brian more than a friend
posted over a year ago
and after he killed olivia he asked why cant there be something where guys hang out with the same sex after a few questions brian said yeah there is its called being gay stewie said Oh thats what that is