Myself and my 11yo ds's father are divorced but have a great co-parenting relationship.
Through a hobby, exH is friends with a woman who is in her mid 30s and married. No children.
Ds is also involved with this hobby so has met this woman many times and they get on well and see each other frequently. She bought him a little bday present which I thought was sweet.
For ds's bday a week ago he got his first mobile phone. Mainly to keep in touch with the parent he isn't with that particular weekend, and to get him used to keeping in touch with us ready for when he's older and more independent.
ExH clearly gave this woman ds's number as she's been texting him a few times in the last week.
The first message was some quote from a film/series that I don't know of which was "hey baby, you smell good you been bathing in cupcakes and rainbows again?"
Then he replied, and she text back with "now you have my number you contact me if you need to, about anything at all ok?xxx"
Aibu to find this annoying, and feel kinda undermined as his mother? The other texts are just "morning! Have a good day at school!" and stuff like that.
Also is this even appropriate behaviour? What if ds were a girl and this adult friend were male, surely it'd be majorly off so why is it different that he's a boy?
Or am I being jealous and precious and totally overreacting?