I haven't.
I guess I am a bit old fashioned and I was raised to believe in the traditional "boy asks girl". :/ He is currently getting his degree in radiology and says he feels he can't properly focus on a relationship at the moment. But he also told me I am the only girl he feels a connection with, he feels accepted and comfortable with me and he would like to change our friendship status at some point. He "could totally get used to the idea of loving someone like me forever". I feel rather humbled, I don't feel I have really done anything worthy of his opinion of me. He does not say things like that easily or lightly, coming from a guy who was unable to say "you are a good friend", it carries weight, lol. We are still very close and the more I learn to know him the more I admire and trust him.
This forum really helped me understand his rationale and feel more confident in my position with him when he unknowingly leaves me a bit uncertain at times.
Thank you for your interest!