I have a real problem with friends always have. Like Mike I dont think I have had friends most of my life. I was bullied a lot at school and it has made me independent and introverted. Strangely I am quite happy and friendly around people, will chat to anyone but these people never become my friends. At college in the last few years I used to hang around with a few people and some of these I am still friendly with but not in a "go for a coffee and a chat" sort of way. Two people I thought I was friends with there hurt me quite badly and so I have become even more reluctant to make friends, I have become scared to let people in, it hurts too much.
The one exception I have is my friend M. We became friends through running a kids club together at church and she has resolutely stuck by me through all my illness. She makes an effort to come and have a coffee with me every week, which as she looks after 3 grandkids and her ailing hubby, is the church warden and a governor at the local school (and in her mid 70's) sometimes is tricky for her. She is my greatest fan.