<human>: Can you succinctly summarize the text in 1-3 sentences?

We were originally FWB for a few months before emotions got the better of us and he suggested a serious relationship. I have never been in a relationship before him. He is very committed and often speaks about us having a future together.

Over the last two months we have been constantly fighting over how much we should be talking to each other daily, hanging out alone rather than with friends, reluctance to attend each other's family functions etc. 

A lot of these fights have been due to me feeling overwhelmed and panicky about our relationship. As more time goes on, I am not sure if I am ready for all this. However, I do care about him a lot and want him in my life...

I want to ask him if we can slow things down a bit, and hang out together without all this added pressure. But I am unsure how to go about this without him thinking this is a precursor to us breaking up. Of course, if he wants to break up then I will have to deal with that. Also, if he agrees, I have no idea how to negotiate with him on casual boundaries, or even what they should be. He has never had a casual relationship and will struggle with the idea. I do know that he will require exclusivity.

Does anyone have any advice as to how to go about this? And how have you handled casual relationships yourself? I have a few ideas, but reading others' experiences would greatly help.
<bot>: Getting cold feet but want to warm them up again... slowly. Don't know how to introduce this idea to the guy, or even what a casual relationship could entail.