Some background-my brother has been with his GF, for several years now, and due to some shenanigans she pulled this past year, my parents will have nothing to do with her (her own family will have nothing to do with her either). My brother calls her strong willed, but in actuality, she is very emotionally abusive.
My brother had moved up in October to stay with FI and me, in order to find a job, as job opportunities in Alberta are an order of magnitude greater than hometown...He did find a job, and we told him he could stay until the end of the year, but that she was not allowed to stay with us-3 people is a tight squeeze, 4 is impossible! His GF stayed in hometown until middle of December, when she decided to come up, at which point he moved to a motel, which is a 2 minute walk from work, rather than a 45 minute drive!
While my brother was staying with us, I could see his old personality come back, he was happier, more relaxed, etc. I talked with him a week after she arrived, and he was back to sounding like an abused spouse, it really breaks my heart.
He has already gone home for Christmas, with her, but my parents don't know that he was even talking with her for the last nearly 3 months, never mind that she has moved up with him. My question is, do I tell my parents that they are together (when they ask, which they will). My FI is fir,ly of the opinion that I should tell them, but I'm really on the fence about it, as my brother and I have just begun repairing our relationship (another long story, in which his GF plays a LARGE part). I'm afraid that it would have a very negative impact on our relationship. I don't know what to do, please help me!