Our daughter is in her late 20s and has been v happy in a relationship for the last 2 years. However she & her boyfriend are currently on a break due to issues of his. She is quite sad but still very loyally defends him and tells us not to think badly of him. He has now written us a letter in which he thanks us for welcoming him so warmly into our family and saying he hopes to see us again. He does not discuss his relationship with my daughter.
Would you reply to the letter? I don't really have anything to say, but am aware that no reply could be construed as pointedly & resentfully ignoring him which is not a message I want to convey. I have of course told my daughter who said he had mentioned he might write to us. She suggested that as he is not close to his own parents he might be wanting advice from us, but this would be tricky for us bearing in mind our first loyalties are obviously with our daughter. My husband is leaving it entirely up to me to decide whether to reply and if I do, to choose what to say because "you're so good at this sort of thing" (!?) but I can only think of rather banal platitudes as I in no way want to interfere in their relationship.