My sister in law is the same way.
I still say that every time the gay thing comes up, regardless of the situation place or circumstance, we should loudly, forcefully and without backing down under ANT circumstances, ask the following...
“What does the manner in which you have sex have to do with this issue?”
And I mean EVERY TIME. MAKE these bastards explain themselves. You will quickly see a turnaround in the genpub’s attitude after the initial huff and puffing.
Because once ant thinking mind has to address that question, the end result is not ‘pro-gay’.