I certainly hope so, although I fear that marriage may make a particularly close friendship somewhat imprudent.
As some of you here might remember, last February I got back in touch with my (unrequited) first love. I've still only actually seen her in person twice during the past six years, but we email an talk on the phone pretty regularly. I'd consider her my best friend, as she is the only one I'm comfortable calling up just to talk and I've shared more with her than anyone. I still love her but she is like a sister to me now, not someone with whom I'm hoping to have a romantic relationship. She is still very physically attractive, but when we've spoken recently she seems too much like family to think of sexually. (I confess that when we haven't talked in a while she may still occasionally pop up in sexual fantasies or dreams. However this still never involves her cheating on or leaving the boyfriend she clearly loves, but rather them having an open relationship and inviting me for a threesome or foursome.)
Anyway, she has been with the same boyfriend for almost 5 years. Right now she is in England with him, where she went to spend the second half of Christmas break with his family (whom she hadn't seen in 3 years and he hadn't seen for a year and a half). I learned a few hours ago from facebook that while there he proposed, and she said yes. I can see several picture of her wearing a very nice sapphire and diamond engagement ring and an extremely genuine smile.
I haven't actually met him yet, but from what I've heard and read on facebook it seems like I'd get along better with him than anyone else she ever dated. It seems like his personality is across between hers and mine. He is not physically attractive (I look way better), but does have a very kind smile and a quirky sense of humor. The Silmirilion is among his favorite books. He is ethnically an Ashkenazi Jew and still tries to keep kosher and celebrate all the Jewish holidays despite the fact that his family has been Anglican for generations. He is originally from South Africa but has lived in about a dozen countries and traveled to a lot more. He graduated near the top of his class at Oxford University and worked for IBM for a while, but as he was approaching 30 he got tired of the cubicle and decided to become a medical doctor. They met in a chemistry lab at Georgia State University, where he was a Pre-Med and a Chemistry/Pre-Pharmacy major. He is now in his third year of Medical School at the Medical College of Georgia in Augusta and she in her third year of Pharmacy School at the University of Georgia's satellite campus in that town. As of this October he still had no idea what medical specialty he wants to choose.
They were in a serious relationship the whole time we've been good friends (although I've known her more than twice as long as he has), so hopefully this next step in relationship won't effect our friendship too much. Still, I think I need to try to spend more time with them together rather than her alone and try to be friends with him too now.