BM made a weird gesture towards my partner
I have been with my partner for around 2 years, we’ve been living together for the past 1 year. He has a son and the mother lives on the same street. They are divorced for the past 6 years and have good coparents relationship. A while ago we left for vacation and he left her keys from the car, in case there will be parking suspension( it happened before and he paid a fine, so I was fine with that, I didn’t even know about that, but I don’t care). What happened after was weird though. She does bracelets as a hobby. So some days after I notice bracelet on his keys of his favourite colour. I asked him, he told that she did it and just put it on the keys. I felt really hurt as this is out of the coparenting issue and slightly breaches the boundaries. I just took it off and threw it away. He didn’t pay attention that it disappeared same as he didn’t care that she put it on.
After that I feel very triggered seeing her.
Would you be fine with something like that ?