1. Convictions by courts for what was termed at the time "homosexual acts."
2. Gossip and rumour.
3. Mental instititutions
Nazis are not gay; in fact, the Nazis murdered tens of thousands of gay people in concentration and death camps.
The previous answer by Cameron Davies is not entirely true. There were likely many gay Nazis, who remained closeted due to the political climate. While there were no openly gay nazis, it is within the realm of possibility that 3-8% of nazis were gay.
People don't decide to become gay, they're born like that.
Pink
The Nazis killed gay people during World War II. Today, about 10 countries have the death penalty for being gay and significantly more have groups/police that openly kill gays without criminal repercussions.
Gay people did not decide this. The majority decided that same-sex marriage was crucial to society and to the LGBT community.
You do not decide. You realise. Being gay isn't a choice.
No. No one can choose their sexual orienation.
Ask him. Only he can decide if he is or not.
Only he can decide that, you will have to ask him.
No. You can dress however you like and only you can decide on the inside if you're gay or not
They turn out to be gay mostly when they are attracted to members of the same sex, and then decide to come out.