Why or how did your last friendship end?

My last friendship ended because I was the one always doing the chasing, making plans, following through and etc. I stopped talking to a friend almost two years so far, but recently she mentioned she missed hanging out so I made it attempt to say hey lets go out to dinner. Well she said she had a bad cold. I said "well make sure you let me know when your cold is gone" so a week or two went by, and I didn't hear anything. This was in September. I am most definite her cold is gone. So she had her chance. She is a cold person, never keeps in touch. I also stopped talking to one of my best friends. That was hard, but became easier this past week due to him being a jerk, and treating me like lower than someone he doesn't even like. He calls me a good friend, but treats me like crap. Ignores my questions (work related, career related, web-base related, recommendations related) you name it, he ignores me. I am fed up. Two years of that friendship, I have zero patience left. He is wishy-washy, some days I feel like we are friends mutually, and other days I feel he hates me or can't stand me.