Hi D., I have a 13 year old daughter, and two boys 18, and 16. My daughter and I are very tight, and hearing your post warms my heart since you have kept her close even into adulthood. Clearly to date, you have done it right that she shares such intimate details of her love life with you at 21. Every mother wishes for what you have with your girl,
I also have relationships with ALL my kids friends, boyfriends/girlfriends...a friend of their's is a friend of mine.
My oldest who is a freshman away at college is having similar issues with his girlfriend of 3 years. I LOVE her, she has become a family member over the years. I see and feel (literally also on facebook and myspace etc) the conflict between them. I do not respond to her posts when she specifically reaches out for my son, but the generic ones, I DO respond to. I understand youthful relationships are fleeting, and like you, I don't want to but in, but I love both of them immensely....
You and I as Grown-Up people have had relationships come and go, and as traumatic as it is, we've both survived.
I can have a private and completely unrelated relationship with his girlfriend and future girlfriends (sigh), I mean I THINK I can, without crossing the line...
I'm not sure. I'm hoping for some REALLY interesting posts from other Moms with grown-up children too. tehehe
I think about MY mom and the friends me and my siblings have all had, they come and go...
Only thing I can say, is I think you must be a fantastic Mom to have kept her so close into adulthood, both of you are very fortunate to have each other..
And like Potty Training and Mom's Taxi, this TOO shall pass
Peace to you!