I would just say no.  wouldn't offer any other info.  If they want to assume then they can assume, that is something that they are going to have to deal with in themselves and it isn't automatically your responsibility to help with that.  Plus it is obvious if they default to girlfriend alone they have some heterosexual preferences in comfortability and probably would be offset by homosexual intervention.  By saying "but I have a boyfriend"  then you are somewhat contesting them and provoking, at least in some degree, a potential confrontation that wasn't asked for.  Not that it shouldn't be had under the right circumstances.  so there is a place for pride in this respect and getting the word out about any person's group so that those who are not of that group can be forced to understand other's differences, this is still not the same as being treated equally.

What you seem to be claiming about coming out though, seems to be more of a personal thing.  Which is key to anyone's development, to understand who they are and what makes them do what they do.  Being proud of who you are is also key.  But part of being proud of who you are is accepting who you are and that is a state that does not require proclaimation to those who do not deserve to know in the first place.  It seems that by approaching those instances with a sense of revealing ones sexuality is still an attempt to accept oneself.  If one is truly accepting him or herself, then they wouldn't feel the need to bring in that level of conversation.  However, if there is another agenda, for instance bettering the other person by exposing them to the existence of homosexuality, given that the moment is right and isn't just a blantant disregard for the other person, then that isn't necessarily an element of being out and proud, it is an effort to extend the other person's comfort boundaries.  Though being "out and proud" is easier to market and for the average populous probably is more effective in establishing exposure, but with it being so unedited, in many cases the activities surrounding it hurt the overall fusion of homosexual existence with the rest of society.

I am only 43% gay but I love people who are out and gay :)

They shouldn't have to be treated like dirt by society.

I am a republican for those that don't know.

Where in the Bible does it say that homosexuality is wrong?

If God didn't like gays, why did he:

a) create them in the first place

b) Give some of them so much talent (Elton John, George Michael, Adam Lambert [last one is a maybe])

I think using the Bible as an excuse to be against homosexuality is ridiculous.

I'm scared. my 2 brothers hate gay people and so does my mom. My sister does too I think.  .My dad does too but I don't care about him and I don't live with him anymore.

I love who I am but if I have to come out and be abandoned by my family even though I'm the only one that even has a job in my family, and get made fun of, **** that!!

I don't think there is anything wrong with homosexuality, I believe it is natural just like heterosexuality. Both are natural to me.

and I do have a bf, but it's currently an internet relationship (he's on VGC too!) but that'll change in a few years. :D