He told me that he thinks we are perfectly suited for one another, have all of the right things in common (eg. perspectives on religion, family, finance, careers, etc.), he could see himself having a happy marriage with me, and he is very attracted to me. He then told me that he doesn't want a romantic relationship, but hopes we can continue on as friends, because he is afraid adding a romantic element to the relationship will ruin it.
If he can't say the first part without saying also, "So let's make this official and start courting," he shouldn't have said any of it, and I'm betting on some level he knows that. He needs to figure out what he's afraid of and either get over it, man up, and make it official, or back off on his own. He does not get both.
Maya, I'm sorry this isn't working out, but the only thing you can do is back off. Spend time with girlfriends and surround yourself with them in company, talk to your mentor if you have one, grieve the relationship
and put it out of your head. I'm sorry your hopes have been disappointed.
It's possible that as you back off he'll see what he's losing and change his mind, or that his mentor and male friends will smack some sense into him. However, you can't count on this to make you happy, so go on as though you don't expect it.
I wouldn't seek out the opportunity to tell him what you think, but if he asks, I wouldn't sugar-coat it either. "I'm not interested in becoming close that way to someone who is not willing to commit to me. I like you, but if you're not willing to move towards marriage, we can't continue the way we have been. I wish you the best and look forward to seeing you at Group Event."