Her One Night Stand Didn't Tell Her About His Husband—Does She Have a Right To Be Angry?

Savage Love Letter of the Dayby Dan Savage
I'm a bisexual cis-woman in her thirties and British. Over June and July, I spent three wonderful weeks in Los Angeles, as my bestie lives there. She is also single like me so we had a lot of fun talking to guys on apps and going on dates.
I slept with three men whilst I was there and had a lot of fun, however, I found out something since which has soured my experience. On Friday night I was sent four picture messages from the last guy I hooked up with,