Stella - after my ex finally left, the first guy I dated was a long distance relationship. I would drive up to see him about once every month or two, we would chat every day. Ooh, he was a lovely guy, handsome and sexy, smart and interesting. However, he was what is known as a Love Avoidant. He liked seeing me, but not too often, and wasn't really a relationship seeking guy.
After about a year and a half, he dropped me to resume a relationship with his high school sweetheart who had found him online. I really couldn't be mad about that, and they are still together (sort of - she doesn't seem to get any more from him than I was getting.)
But during the time before that when I was getting frustrated with not getting more from him in the relationship, I wrote on an index card "He's Just Not That Into You" and stuck it in the visor of my car. Every once in a while, when I would find myself thinking longingly about him, I'd pull down my visor and read that card. Sounds silly but it really helped me stay sane about it.
The happy ending is that he and I are still friends, and I'm happy now to just have him as my friend. He was instrumental in my healing from my divorce and I'll always be thankful to him for that.