Messaging - Conversations instead of Emails
How about getting rid of subject lines for messages? Other dating and social network sites often don't have them. The conversation flows better without them, and apart from being superfluous, it's hard to think of what to write in them
You should just be able to start a conversation from where you left off without having to search for previous messages.
A single private message conversation per person, like on Facebook. Separate conversations make PMs complicated and are unnecessary.
Direct link to messages sent to/from a user on their profile page
Create a native live web chat feature for personal messaging on the site (similar to Facebook Messenger).
Bill Glazier commented
When we hit send message to another member, our past messages should show up. That way we will know if we have corresponded with him before, if they are interested or not interested. That way we do not send repetitious messages to those members
It would be a good idea to get a fast instant messenger similar to Facebooks.
One that you could talk to people to who you follow, and they follow you back. Just an idea.