got the pm .

this boundry problem will work out.
When it comes down to my boundries vs hurting others feelings I think about that other pserson and what they would want if the situation was reversed. Would they want me trodding all over their boundries? Of course not.. Every human being sets boundries and every human being expects their boundries to be respected and upheld. It is when boundries are broken that the person becomes abusive. For example - the boundry of this is my body and that is your concept. someone over stept thaat boundry and the situation is ethically and legally considered abusive if the advancer does not have personission to do so.
Suggestion read your past posts and pms to people and you will recognise where you have positively set boundries for yourself and you will also see that you are capable of setting your boundries without hurting other people - for instance who you choose to pm and you choose not to. that is one of your boundries. look at how you were able to post to others without overstepping yours, theirs and this sites boundries.
Im sure you will find other situations where you can find that you know how to set and honor yours and others boundries including how you have said no to people without hurting their feelings.
also by comparing posts and pms from when you first came here compared to this situation that has got you stuck. Once you do that you will see what you need to do to take care of why, where and how you are stuck on this issue now.
Also talking with your therapist about the boundries type problems will help you.
Take care