I am sure this may or may not have happened to the follow male language learning maybe the girls even, but last night I went to a Spanish meetup where I am from and had to opportunity of speaking with a very nice girl from Venezuela and upon trying to speak Spanish I could not say a single word.
My whole mind went blank and the only words that came to my head were English.
It gets better with practice. I’m actually a lot more comfortable speaking to a pretty girl in her language than I am in English. It sort of gives me the opportunity to be a bit more extroverted.