Hmmmm, I can understand this. At the end of the day, it takes two people to maintain a friendship and friendships do take some work. But perhaps you are being rather sensitive?
I think that when it comes to break-ups, many friends/people are terribly uncertain of protocol. Let’s face it, nobody wants to listen to someone whining about their ex in too much detail. So possibly some folk keep their distance?
Have found it quite tricky myself, coming out of a marriage and starting another life. In fact one friend, whom I have known for a very long time, actually told me that she thought I was shutting myself away from the world.
Give it a go, you’ve nothing to lose but a lot to gain. 🙂