Context is that I have been non-exclusively dating this girl for the past 3 months. She has been great, and we enjoy our time together. Sex is abundant, she's very submissive to me in bed, she is supportive, and she has fitness goals/her shit together.

Recently, things have started to progress towards LTR territory. She raised exclusivity recently when we were on a weekend trip, and I said that I was open to it. We agreed that we would try a committed relationship (as of 1-2 weeks ago).

The problem is that in my gut, I feel like things are too fast. I don't know her family well (parents live overseas, however), or her friends, and I can tell that she hasn't fully internalised being an exclusive girlfriend in public. This puts me off.

I have also noticed myself getting oneitis, by previously hoping for an LTR to eventually happen, and doing coupley shit with her before we were exclusive together (a mistake on my part). Part of me wants to pursue other girls to get rid of this oneitis (during 3 months of dating, I saw another plate occasionally, but not often; hence, realise that I may have become a bit too attached and am lacking abundance).

My question: What is the recommended course of action from here? Should I tell her that I think we should continue to date casually for more time, and that being exclusive too soon isn't a great idea? Is this a reasonable thing to do from a RP perspective?

Or should I continue the current path, stay exclusive, and see what happens? We get along well and I enjoy her company.

We are both 21 and at uni. For context, all the other shit in my life (e.g. lifting, studies, career goals, social life) is going well, and I am happy overall. Advice is appreciated.