I've hanging out with this girl for a couple of times. How can I show her that i'm open for a relationship?

So i've been seeing this girl for like 3 dates, we both have been just friendly, at least as far as i can tell. How can i show her that i'm open for me, without making her uncomfortable, just to test how she would react

I've hanging out with this girl for a couple of times. How can I show her that i'm open for a relationship?
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