I completely understand this. It was only last week I was telling the CHM that I dont have many friendships and the one that was building with my daughters friends mum, I hadn't made up my mind whether or not to pursue the friendship and she looked at me in a weird way. I thought I was abnormal, so said, must just be me then
I wear my heart on my sleeve and it tends to get me hurt. I also will do anything for anyone which has left the door open to being used as a welcome mat. I guess it's only recently (the last 2 years) I have decided that Ive had enough of these people, dumped them all over time, although one stopped talking to me which once I had gotten over the shock of it i realised i didnt actually care about them anymore. So now I am very wary after what they put me through. Although it can be lonely at times I kind of like being on my own. I especially like it when me and my daughter spend quality time together, which is any time she is awake, where she is home from school and not preoccupied with something else.

It will take time but you will get there eventually. Like you said at least you recognise these red flags. It's much better than jumping in with both feet and ending up in the same position you were previously in.

Hang in there