OP - I generally agree with your sentiment that MIL is a grown woman and can handle herself. But if there is no stopping your DH from talking to his mom, I suggest you help him consider:
Anonymous wrote:The difficulty is, if the basis of your/your husband's distrust is, "Why would a young guy like that be honestly into you? He must be after your money," that will be a very hard message for your MIL to hear -- basically you're saying you can't believe he could possibly actually like HER. I'm not saying you're wrong, but I'm saying you can't convey that to your MIL and expect her not to be insulted & hurt.
I think 9:51 has the right idea -- bring it up so that it has nothing to do with the new guy *specifically*. You can mention the fact that she's in a serious relationship as something that's spurring the conversation, but I'd present it like you'd be concerned even if she was in a relationship with someone her own age.
-This in bold. I just had a friend whose grandmother was marred for the second time, and then she passed away from a degenerative, long-term disease plus cancer. In the meantime, this lady's adult children were battling with her husband to find out what nursing home he was keeping her in, how she was being cared for, why she wasn't seeing doctors four years into the signs of her illnesses, etc. This man was very close to her age.
-Is he concerned that if he addresses this, that his mom might push him away?
-Have DH's siblings or other relatives already talked to MIL and how successful was that?
Just because an older person's SO is a similar age doesn't mean they aren't getting taken advantage of. OP, if your husband decides he's going to talk to his mother about this, he should encourage her to think about:
1) The fact that the boyfriend has a kid from another relationship. MIL should know everything she can about this relationship (I would want to know if it were the guy I was dating).
2) MIL should be prepared for heartbreak. What if this guy really likes her and isn't an opportunist? Relationships don't always work out, and MIL should be aware of this, esp. if she's being whisked off to Europe.
3) It sounds like the boyfriend shares custody of the child. If this relationship gets serious and they move in or get married, does MIL want to take care of another young kid that could easily be her granddaughter?