Sorry this is long
Without being too outing, today a big football match was taking place for a team that I support, that was being televised live. I used to be a season ticket holder but can’t find the time after having DD to go to matches. Therefore I like to watch their big games on tv if they are on.
I told DH several weeks ago that he would need to put DD in bed on this day (always me that does it) as I would like to watch the build up to the game for a change. As it happens I ended up putting her to bed as she fell asleep very quickly
When we got home from work/nursery, DH said he’d spoken to his sister earlier, and that he’d asked her if she wanted to come over for dinner this evening.
I reminded him that I’d be watching the match, in the main living room (that’s the only room Sky works in) and that I was not going to be hosting/cooking. He laughed it off and said that he would cook and then sit with SIL in another room to let me watch the match in peace, as he is not into football anyway and neither is she. Fine I thought, I do like SIL and we have a good relationship. We see each other twice weekly at least as she doesn’t live far, so I don’t feel like I have to necessarily have a ‘catch up’ with her everytime she visits, and so I know she wouldn’t have a problem with this either.
Anyway, I put DD to bed, the match starts. DH and SIL are in the kitchen talking and making dinner happily. I have told them I don’t want dinner as I had a late heavy lunch so i’ll just have something light at half time.
They finish making dinner and then eat in the room I am watching tv (where we have a dining table). No problem with this, we are chatting as they eat and I watch tv, I’m not ignoring them and I’m keeping an eye on the match too, so it’s all fine.
After dinner, rather than go to the other room as planned, SIL and DH sit on the next sofa to me, and SiL starts talking about deep issues going on in her life. She starts telling us about a close family friend who has been beaten up. I am talking to her about it and being involved in the conversation, when my team score a few minutes later. As I’m half watching the screen, my instant reaction is to cheer as my SIL is in the middle of talking about this serious situation . I instantly apologised, to which she laughed and said it’s fine, I put the volume up slightly to hear the commentary to the goal, then after 20 seconds when I had seen/heard it properly, turned it back down and carried on talking to SIL and DH about the friend.
Unbeknown to me, DH has text me when I did this with “you just came across as a bellend”. I didn’t see his text until 10 minutes later, and I didn’t reply, I carried on speaking to SIL while trying to watch the match at the same time.
50 mins later (so at half time), SIL gets up to leave. We say our goodbyes. I return to the tv, DH walks in with a look of thunder on his face and says “ignoring my text then?”
I replied that the text was sent almost an hour ago and that I didn’t think it would still be bothering him, and I defended myself by saying tht I apologised to SIL for interrupting her.
He then completely dismissed what I said and called me rude, how I should care more about speaking to my SIL rather than a football team and that he will disrupt my conversations all week for me to see how it feels 
. He made it sound like I shut her down when all I did was cheer and turn the volume up for 20 seconds.
By this point, I admit I was pretty annoyed as he was blatantly exaggerating, and snapped back that I had explicitly told him I would be occupying the tv for this match today (I rarely watch tv in the evenings) and that he had no business to invite SIL over for dinner without asking me, and then expect me to watch my match while listening to SiL telling us her life stories.
He then flipped and left the room, and we’ve not spoken since.
Who is BU?