AITA for flirting with my brother in law?

I (30, m) am married to my wife A (25, f) she has a brother, V (38, m) who lives with us, along with his wife, T (32 f), and newborn daughter, G.

First off, I am very bad at flirting. I have a cousin who should teach flirtation classes. I am attracted men and women, which my wife has known from the beginning of our relationship. She didn’t know that I liked her brother first (in my defense she was a teenager at the time it would have been inappropriate and weird to say the least).

I once tried to woo him by gifting him a set of knives, it didn’t go se well (his work involves cutting things incase you wondered where the idea came from). So after G’s birth we sat outside the estate and talked for a while, I didn’t even realize the casual conversation had taken a turn until I caught myself looking at him as I used to many years ago.

T overheard and began yelling at us both, A overheard T and beginning the loyal sim she is chewed her out for yelling at us. As A put it, “flirting is not a big deal if it stays at flirting. People can slip up and unintentionally flirt it doesn’t have to mean anything.”

I love A with all of my heart, I know I married the right person, my person… but now T and V are arguing non stop so A and I have been tending to G. I can’t help but feel responsible. AITL for accidentally flirting?