Has this happened to anyone.....?

I was at my nieces birthday party she turned 1.Well i was there having an ok time,when my sister(her mom)came in to the kitchen and started taking about 2 girls my brother was hitting on.She said that they were interested not in my brother but in me,I was flabbergasted,I didnt know how to respond.Surrounded by family i(that dont know im gay),all i could do is look at my feet and try and smile to hide my fear of my homosexuality from being revealed,while my brothers uttered stupid suggestions and remarks like "go bang the skinny one then the fat one"Blah blah(i could have easily responded with a heterosexual way of objectifying women but i didnt)her husband whom i find very attractive heard everything which made me even more nervous .I left went outside and sat there until i saw her i asked her why she would do that,why would she put me in spotlight.I thought she figured out i was gay but she said she was always playing with me when she would ask me if i was gay,i had no choice but to come out to her,she didnt believe me when i told her.She asked my sister and my sister whom i told month earlier verified it she came back and apologized.It just felt like my cover had shattered in front of my whole family,i have 5brothers there as witnesses and all i could to was walk away.I felt like they were suspicious the rest of the party.