I have always been quite close to SIL, DH's sister, I have known her for 15 years. Recently (saturday) she was telling her mum that they were having loads of arguements, and that he was being totally unreasonable (I was in room and she seemed happy to have this conversation in front of me) - by way of background:
a) they are trying to sell their house to have to keep in tidy which is hard as its quite small
b) they have 2 DS. Youngest is 11 months old and is BF and until last week was sleeping in their bed, I think latched on all night. BIL was in spare room (for nearly a year now!) as he couldn't sleep well with the co-sleeping. Older DS (just 3) was BF until she was pregnant and he also co-slept until around then. SIL kept on insisting he would not sleep in cot. BIL about 2 weeks ago flipped out saying time had come for him to be in his own room, and lo and behold after one night of only 20 mins of crying he slept all night.
c) BIL is working v long hours, has been coming home and SIL asks him to drive to get their DS to sleep as she does not want him to cry.
d) I think her behavour stems from fact that soon she'll be going back to work very long hours and will be leaving both DS with nanny 12 hours a day 5 days a week.
Anyway today I received 3 text messages from him saying "sick of marriage" - clearly he did not mean to sent them to me, but is it not worrying he sent them at all?
WWYD - should I mention this to SIL?
Other option is that DH can mention to her.
DH said maybe BIL is mouthing of to mates, and its not serious but I am not so sure.