Don't be too hung up on your boyfriend's sexual past. Don't be
too quick to label him 'gay' too. What matters is whether he loves
you now and whether he is willing to be there for you. I think
people go through different stages where they sometimes may
experiment with their sexual preferences. I think we must
distinguish between people who have had gay experiences and those
who are exclusively homosexual. By the sounds of it, your boyfriend
and that of the original writer may be people who may have
experimented with homosexual relationships in the past, but that
does not make either of them gay. What is important is what he is
to you now. If he is capable of loving you fully and is willing to
be exclusive to you, then let it be a matter of "all's well that
ends well".