They love to "escape" through their hobbies. Helps them relax. They need LOTS of "down time" to decompress. Sex helps them decompress. They often drink to excess because they are so sensitive. They want to help everyone. They think about their conversations later--wondering if they have upset anyone.
If they are comfortable with you, they can take advantage of you. Have you do their work. You are a beaver--you just do it and don't complain. He has learned to take a bit of advantage of you.
But he doesn't want you upset with him--EVER. If you hold it in and really "blow up" it is crushing. You need boundaries that come in force LONG before you blow up at him. He will test your boundaries, but rarely really push you.
They are VERY intuitive people which in your H, omgoodness--he so knows you.lol.
He is not going to have a one night stand. Not happening.
He will know the INSTANT you are not mad at him. And you can get to him when that happens. He is hoping you make the first move.
He has seen how methodical you are and thinks you will not EVER change. Stubborn is not the last thing your friends would call you.lol. He has seen that when you make up your mind about something, you rarely change it. He thinks he is a "done deal" in your mind.
It takes things LIKE THIS to change a beaver from their course. You are in shock--this wasn't the plan AT ALL. And changing plans is not going to be easy for you.
His sensitivity will make him a challenge--hopefully your anger will calm down. It's crucial to any progress.
You could help him out with so many things that bother him and hold him back--your strength is something he greatly admires.