I’m a pretty social dude and I’d like to think I have many friends both guys and girls.

When I meet new people I’m welcoming and nice to everyone but sometimes there will come a girl that I seem to like but the issue lays in my flirting skills because to those girls it seems like I’m just being a friendly guy and not someone who’s interested in them more than just a platonic friendship.

How do I differentiate between just being a friendly guy and flirting with a girl?