When you know someone clearly has the hots for you , the signs are there, Do you approach them first or wait for them to make the first move?

I see this girl every day when I go to work and she parks in the same parking garage as me and I notice wherever I park she parks next to me , I usually sit in my car for a little bit playing on my phone before walking into work , I caught her checking me out a few times and smiling and turns her head real fast when I look up at her , I can tell she is shy , but She is very attractive and I smile as well, She has been doing this for a few weeks now , but hasn’t walked up to me to talk , Is she expecting me to make the first move? It be different if i was actually looking to meet someone but I am not looking for a relationship with anyone at this time , but I wouldn’t mind being FWB’s with her because she is very attractive. Should I approach her or just let her make the first move considering she is the one that’s been showing clear signs she is interested in me? What would you do?
When you know someone clearly has the hots for you , the signs are there, Do you approach them first or wait for them to make the first move?
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