AIBU: Boyfriend's sibling called me his ex girlfriends name.

[PerhapsOverReacter]

So ive been with boyfriend for 4 months so fairly new. Both 25.
His brother is 15.
I went to see my boyfriend at his house yesterday and let's pretend boyfriend's ex was called Jen.

So his brother (who btw has met me loads of times) said something along the lines of "Shall i leave you and jen in a bit", I didnt mind this at first, despite mibe and his ex's name being completely different, the three of us just laughed it off.

Then a few hours later, we were all sitting in the living room and on a phone call to his sister, the brother said "just sitting here with (boyfriend's name) and Jen", i felt a bit more awkward this time but i awkwardly laughed it off.
My boyfriend was only with this girl for 2 months and she had only met his family a couple of times as boyfriemd's mum said "why have you said that, you only met ger twice"",

Later on in bed, i asked boyfriend why i was called Jen twice and I felt a bit moffed and awkward, He said his brother didnt mean it in a bad way and it was a mistake and he doesnt want me to be upset about it,
I wasnt too much upset but i did feel a bit off.

So i don't dripfeed, i'm probably feeling a bit down too because boyfriend works away so has been away for 2 weeks, came home yesterday and is now off on holiday for a week with a friend so i didnt see him much.
We had a great time but towards the end of the night, he asked me to pick a movie and then turned his back to go to sleep which caused a slight tension because i said to him we havent spent.much time together and youre going away again and now youre just turning your back to go to sleep.

I just feel i was quite.moody but.i didnt mean to be and I feel this is maybe something i need to.work on, i just dont want to scare boyfriend away. We have a great time together and get on so well but I just felt a bit off yesterday

I did apologise to boyfriend this morning about being a bit moody last night,
I think most of.it was because of not seeing him.for so long and then knowing he's going away again so probably me just missing his company

I regularly call my boyfriend one of my long term exes name..

Mil called me by dh ex loads and it really pissed me off,dh soon told her to pack it in

I think his brother made a genuine mistake but he made you all laugh. He probably then repeated his mistake to try and make you laugh again. He is 15. I would be flattered. I think he probably likes you and wanted to make you laugh.

I call my sister by my daughter's name and vice versa very regularly. My son's fiancee often gets her name a bit strangled by me as her name and his previous girlfriend are very similar and have the same derivative, which his fiancee doesn't use but ex did.

Every time someone calls me a wrong name (in whatever setting) I just reply normally but address them with a different name first, preferably of the wrong gender.

"jenny (meant for bettername) would you like a coffee"
"Yes Eric (Real name Anna), I would"

It gets a laugh and a sorry most times.

My brothers best man at his wedding did a toast to my brother and (insert ex girlfriends name here).
The new one had been around for alot longer and had married him.

Everyone laughed it off including my brother and his new wife. It was a mistake.

I'd get over it. Seriously why would you waste your time being worried about this. If you are, split up with him and move on. Perhaps if it was your boyfriend calling you his exs name over and over I'd be annoyed but not his brother. I think it's a ridiculous thing to be so annoyed about you posted a thread on it.

My ex's brother used to do this all the time on purpose to try and wind me up.