My bf wants me to milk his prostate. How do I do that? I want to please him

Finger his anus (inwards) while jerking him off.

You could do it with your finger, if it's long enough, but there is a nifty-looking product called an Aneros, which is custom-designed for this activity. You can search the Internet (google the phrase of the name Aneros) and learn everything you need-to-know to do this safely. You might find the thought of this activity to be disgusting or worse, so be prepared.

when u go into the butt and put pressure on the prostate gland. That s about all the directions i can give.
u will know when u feel the prostate

i think you need to find a new boyfriend who doesn't want to use you as a sex object...

PM is obviously sex.. like duh.. But I dont know what kind of whack job would use those kind of words..

quite trying to please him.. its not worth it..

uhm never heard of that !!