What are some things INTJs should know about INFJs?

I'm a female INTJ talking to a male INFJ lately and have been experiencing some romantic feelings for him. (I posted a question on the forum yesterday but decided to delete it just in case he ever stumbles across it. It was too identifying).

I know we all share Ni and Se, but Fe is a function difficult for me to understand. I'm fairly blunt and go-getter but I realized that can come across as aggressive to some people; maybe even to him if I don't temper it. I've only known him for a few weeks so I am not looking to rush this. But I've been having a difficult time figuring out how much of myself I should share, when I should initiate conversations, and what I should do in order to let him know that I'm interested in him without forcing myself on him.