I'm really at a loss on what to do. DS turned 18 last week, he's been in a relationship since last summer, which I wasn't happy about from the beginning due to the age gap (he had just turned 16 and she was 18) and she seemed very controlling of him, whenever he was with friends she'd tell him she missed him and would argue with him if he was out with friends that are girls, if I said no to her staying over he’d go and stay at hers, she demanded DS to videocall her everyday during our holiday etc those are just examples.
Then she announced she was pregnant, I wasn't happy but I was supportive for DS. Grandson is now 3 months old, they were all living with me and his gf seemed controlling and would often say do this instead of x etc. They split up as gf accused him of cheating and gf went back to her mums with baby, they've got back together and DS has moved in with her mum also, this was about a month ago. I've only seen DS a handful of times since, I've not seen grandson and I've had a message from DS saying GF doesn't want me seeing grandson so he doesn't want to see me either and to stop texting him as it's ‘annoying’. His dad has said DS is fine with him, although he's never met the gf and he's only seen photos of grandson.
WIBU to keep messaging him?